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Roots

For generations, the hair of those with Black and mixed-race ancestry has told stories. It has been a canvas, a shield, a legacy. Yet, within its remarkable structure lies a tendency toward dryness, a characteristic often misunderstood.

How, then, did our ancestors, with wisdom passed down through countless sunrises and sunsets, care for these coils and curls? Their answer lay not in harsh chemicals, but in the bountiful lap of the earth itself, in traditional ingredients that cradled each strand with life-giving moisture.

We are not simply discussing remedies for a common hair concern; we are reaching back into a profound history of care, a history etched into the very soil and spirit of ancestral lands. The understanding of textured hair’s unique needs—its helical shape, its tendency for natural oils (sebum) to remain closer to the scalp, its inherent capacity for breakage—was not a scientific discovery of recent times, but a lived experience, observed and acted upon by those who walked before us. Our elders knew, instinctively, that these hair patterns, beautiful and resilient, also demanded particular attention to hydration. This deeper connection, this heritage of knowledge, guides our present conversation.

Bathed in soft light, three generations connect with their ancestral past through herbal hair practices, the selection of botanical ingredients echoing traditions of deep nourishment, scalp health, and a celebration of natural texture with love, passed down like cherished family stories.

Hair’s Ancestral Anatomy

To truly grasp the wisdom of traditional ingredients, one must understand the very architecture of textured hair. Unlike straight hair, which allows sebum to glide effortlessly down the shaft, the tight curls and coils inherent to many Black and mixed-race hair types create a winding, often circuitous path for these protective oils. This structural reality means that while the scalp might be well-lubricated, the ends of the hair often yearn for additional moisture. This inherent characteristic, a point of fragility as well as a source of strength, was precisely what ancestral care practices aimed to address.

The cylindrical shaft found in straight hair transforms into an elliptical or flattened shape in textured hair, and this shape dictates the curl’s tightness. These varied shapes result in a higher number of cuticle layers that can be prone to lifting, leading to moisture loss. (Loussouarn et al. 2005).

Centuries ago, without the benefit of microscopes or chemical analysis, communities developed an empirical science of hair care. They observed how their hair responded to elements, to different plant extracts, to various fats, and to the environment itself. This observation led to the identification of particular botanicals and natural substances that mirrored the hair’s own needs for emollience and protection.

The wisdom was practical, born from necessity and a deep connection to the living world around them. It was a heritage of responsive care.

Ancestral knowledge of textured hair dryness was born from keen observation and a deep connection to the land’s natural bounty.

This evocative monochrome portrait celebrates afro hair's natural coiled beauty and cultural significance, highlighted by skillful lighting emphasizing textured detail. The portrait links ancestral heritage and expressive styling, echoing a blend of visual artistry and holistic self-care through the timeless form of a leather jacket.

Language of Curl and Coil

The very terms used to describe textured hair today, like “coily” or “kinky,” have their roots in historical and cultural understandings, though some have evolved from derogatory usages. In pre-colonial African societies, hair was a profound identifier—a visual language. It communicated one’s age, marital status, tribal affiliation, social standing, and even spiritual connection.

The way hair was styled and cared for, including the ingredients used, was a public declaration of identity and heritage. (BLAM UK CIC, 2022).

Modern classification systems, such as the Andre Walker Hair Typing System, categorize hair into types like 4A, 4B, and 4C, describing various degrees of tightness in coils and kinks. Type 4 hair, known for its tight, dense texture and often dry disposition, requires significant moisture to thrive. This characteristic dryness, a reality for many with these hair types, has deep historical roots in their evolutionary adaptation to protect against intense UV radiation, which also resulted in a sparse density and airy effect that paradoxically hindered oil distribution along the strand. (Robbins, 2012; Afro-textured hair,).

This captivating portrait highlights the artistry of braided protective styles, connecting to ancestral roots and holistic hair care practices. The subject's thoughtful gaze, coupled with the intricate hair design, speaks volumes about heritage, self-expression, and the celebration of textured hair.

Historical Environmental Factors and Hair Growth

The lives of our ancestors were profoundly shaped by their environments. Climate, diet, and daily activities all played a role in hair health. In hot, often arid regions, hair was constantly exposed to sun and wind, making moisture retention a paramount concern. The availability of local botanicals, animal fats, and clays dictated the ingredients that became staples in hair care routines.

For instance, in West Africa, the shea tree flourished, providing its butter as a cornerstone of hair and skin care. (Africa Imports,; Obscure Histories,). Similarly, in the Caribbean, the coconut palm offered its oil, a testament to geographical influences on ancestral beauty practices.

Diet also played a role. Access to nutrient-rich foods, often plant-based, contributed to overall health, including that of hair. While direct documentation linking specific diets to hair dryness solutions might be less common in historical accounts, it stands to reason that a wholesome diet, rich in vitamins and essential fatty acids, would have supported healthy hair growth and resilience from within. This holistic view of wellness, where external care complemented internal nourishment, is a hallmark of ancestral wisdom.

Ritual

The care of textured hair, for our ancestors, was rarely a solitary act; it was a ritual, a communal gathering, a moment of connection that transcended mere grooming. These rituals, passed from hand to hand across generations, enshrined the knowledge of which traditional ingredients truly breathed life back into thirsty strands. From elaborate braiding ceremonies to intimate oiling sessions under a canopy of stars, every action was steeped in purpose, a testament to the enduring heritage of care.

Echoing ancestral beauty rituals, the wooden hair fork signifies a commitment to holistic textured hair care. The monochromatic palette accentuates the timeless elegance, connecting contemporary styling with heritage and promoting wellness through mindful adornment for diverse black hair textures.

Protective Styling Ancestral Roots

Long before the term “protective styling” entered modern hair lexicons, ancestral communities understood its profound benefits. Styles like cornrows, Bantu knots, and various forms of threading were not simply aesthetic choices. They were strategic measures designed to shield fragile hair from the elements, minimize manipulation, and thereby retain moisture.

The intricate patterns, often taking hours or even days to complete, created a sealed environment for the hair, allowing traditional emollients to work their magic. (Livara Natural Organics,; Obscure Histories,).

Consider the practice of African Hair Threading, known as “Irun Kiko” among the Yoruba people of Nigeria. This technique involved using flexible wool, cotton, or rubber threads to wrap sections of hair into corkscrew patterns. Beyond its aesthetic appeal, threading served a practical purpose ❉ it stretched the hair without heat, prevented breakage, and crucially, aided in maintaining the hair’s natural oils and moisture. It allowed for airflow while keeping moisture locked in, promoting soft, supple hair.

(The Afro Hair & Skin Co. ). These styles acted as a physical barrier, reducing exposure to the drying effects of sun and wind, thus preserving the hydration that traditional ingredients imparted.

This floral display mirrors the careful selection of natural ingredients for optimal Afro hair hydration and resilience. The monochrome palette enhances the organic textures, symbolizing a deep connection to ancestral heritage and the art of textured hair care.

Traditional Styling Methods and Their Hydrating Roles

Many traditional styling methods inherently incorporated elements that addressed dryness. The application of oils and butters was often a prerequisite for braiding, twisting, or coiling, ensuring the hair was supple and pliable. This pre-treatment not only eased the styling process but also helped to seal the cuticle, preventing moisture from escaping.

  • Oiling and Sectioning ❉ Hair was often divided into small sections before applying oils or butters, ensuring even distribution. This method allowed for meticulous attention to each strand, particularly the ends, which are most prone to dryness.
  • Braiding and Twisting ❉ The act of braiding or twisting hair after applying hydrating ingredients compressed the strands, further sealing in moisture and creating a protective barrier against environmental aggressors. These styles could be left in for extended periods, reducing daily manipulation.
  • Threading Techniques ❉ Beyond protecting hair, threading, as seen in West African cultures, stretched the hair without heat, preserving its natural moisture. The threads themselves could be imbued with beneficial substances or serve to hold hydrating compounds close to the hair.
This artistic monochrome portrait showcases a woman adorned in a Madrasi head tie, echoing ancestral beauty and holistic hair traditions, spotlighting 4a high-density coils texture. The image celebrates sebaceous balance care, low porosity practices within ancestral hairstyles and modern aesthetics affirming expressive styling through heritage.

Cultural Uses of Head Coverings

The use of head coverings – bonnets, scarves, headwraps – is a deeply rooted tradition in many Black and mixed-race communities, extending far beyond fashion. These coverings served a vital practical purpose ❉ moisture retention and style preservation. In pre-colonial Africa, headwraps were often used for ceremonial purposes or for protection from the elements. (Historical Perspectives on Hair Care and Common Styling Practices in Black Women,).

The journey of the bonnet in the diaspora, particularly for Black women, is one of resilience and reinvention. Originally used for practical reasons and even weaponized during enslavement to distinguish Black women as lesser, these coverings were reclaimed as tools of resistance and cultural expression. (The Zoe Report,; Helix Hair Labs,). The shift from cotton to satin or silk linings was a scientific progression of this traditional wisdom, as these smoother fabrics reduce friction, thereby minimizing breakage and preventing moisture absorption from the hair.

This demonstrates how ancestral practices, continually refined through lived experience, evolved to meet the specific needs of textured hair. (Byrdie,).

The journey of the hair covering, from ancestral protection to a symbol of resistance, speaks volumes about its enduring cultural and practical significance in preserving textured hair.

Era or Origin Pre-Colonial Africa
Covering Type Dukus, Doeks
Primary Heritage Use for Dryness Protection from elements, ceremonial wear, symbol of status; indirectly aided moisture by shielding hair.
Era or Origin Slavery in Americas
Covering Type Headwraps, Scarves
Primary Heritage Use for Dryness Practicality for labor, hygiene, hiding hair from oppressors; also used as a means of communication and to retain moisture in harsh conditions.
Era or Origin Post-Emancipation/Modern Era
Covering Type Bonnets (silk/satin), Durags
Primary Heritage Use for Dryness Nighttime protection to prevent friction, breakage, and moisture loss; style preservation.
Era or Origin These coverings evolved from practical necessity and cultural expression, always serving to guard textured hair.

Relay

The knowledge of traditional ingredients, honed through generations of practice and observation, constitutes a living legacy. It is a relay of wisdom, passed from elder to youth, carrying the echoes of ancestral care into our present understanding. This deep historical and cultural context allows us to appreciate the scientific efficacy of these ingredients, bridging ancient practices with modern insights into textured hair hydration.

Hands deftly blend earthen clay with water, invoking time-honored methods, nurturing textured hair with the vitality of the land. This ancestral preparation is a testament to traditional knowledge, offering deep hydration and fortifying coils with natural micronutrients.

What Botanical Emollients Did Ancestors Use?

Our ancestors recognized that textured hair’s propensity for dryness called for external emollients – substances that would coat the hair shaft, seal in moisture, and provide suppleness. The answer resided in the plant kingdom, specifically in butters and oils. These natural lipids offered the perfect balance of richness and protective qualities, acting as a direct balm for thirsty strands.

Their widespread use across diverse African and diasporic communities underscores their efficacy and accessibility. (Africa Imports,; Historical Perspectives on Hair Care and Common Styling Practices in Black Women,).

  • Shea Butter (Butyrospermum parkii) ❉ Originating from the shea tree native to West Africa, shea butter is perhaps one of the most celebrated ancestral emollients. Rich in vitamins A and E, and essential fatty acids, it was used for centuries to protect skin from harsh climates and to nourish hair. Its unrefined form, often referred to as “women’s gold,” was and remains a staple for deep hydration and sealing moisture into hair strands. (Obscure Histories,; Formula Botanica,). The method of extracting shea butter, involving cooking and boiling the crushed nuts, has been a traditional practice for centuries, deeply woven into the cultural fabric of West African communities.
  • Coconut Oil (Cocos nucifera) ❉ Particularly prevalent in coastal African regions and the Caribbean, coconut oil is known for its ability to penetrate the hair shaft, providing moisture from within rather than merely sitting on the surface. Its fatty acid composition allows it to reduce protein loss in hair, a significant concern for fragile textured strands. (Nigerian Hair and Beauty Products,). This ancestral ingredient has stood the test of time, validated by modern science for its unique molecular structure.
  • Palm Kernel Oil (Elaeis guineensis) ❉ Derived from the seeds of the palm fruit, palm kernel oil, widely used in West Africa, is abundant in fatty acids and vitamins. It acts as a powerful emollient, contributing to hair treatments and moisturizers. (Nigerian Hair and Beauty Products,). Its presence in historical practices highlights the utilization of locally available, potent botanical resources.
  • Marula Oil (Sclerocarya birrea) ❉ A traditional oil from Southern Africa, including Mozambique and South Africa, marula oil is esteemed for its moisturizing qualities and high content of oleic acid and antioxidants. It aids in protecting hair from dryness and supports scalp health, addressing concerns like eczema and dandruff. (Africa Imports,).
  • Baobab Oil (Adansonia digitata) ❉ Harvested from the majestic baobab tree, this golden oil from the savannah regions of Africa is highly moisturizing, rich in essential fatty acids and vitamins A, D, and E. It helps improve elasticity and regenerate cells, making it valuable for hair resilience. (Oils of Africa,; Indigenous African Ingredients,).
The craftsman's practiced hands weave a story of heritage and innovation in textured hair adornment, showcasing intergenerational practices and ancestral heritage. This art form speaks to self-expression, protective styles, and the deep cultural significance attached to each coil, wave, spring and strand, celebrating beauty, identity, and wellness.

How Did Clays and Herbs Contribute to Hair Hydration?

Beyond oils and butters, certain clays and herbal concoctions played roles in ancestral hair care, often working to cleanse gently, balance scalp conditions, or provide a mineral-rich foundation for moisture retention.

  • Rhassoul Clay (Moroccan Lava Clay) ❉ Sourced from the Atlas Mountains of Morocco, rhassoul clay is a natural mineral clay renowned for its ability to cleanse without stripping natural oils. It acts as a mild cleanser, absorbing impurities and product buildup while leaving hair soft and remineralized. This makes it an excellent choice for textured hair prone to dryness, as it respects the hair’s natural moisture barrier. (Africa Imports,; Obscure Histories,).
  • Chebe Powder ❉ A revered practice among the Basara Arab women of Chad, Chebe powder is a mixture of various natural ingredients, including Lavender Croton (Croton zambesicus) seeds, Mahllaba Soubiane (cherry kernels), cloves, and resin. (Chebeauty,; Black Beauty & Hair,). Traditionally, this powder is mixed with oil or butter and applied to the hair before braiding, creating a protective coating that seals in moisture and significantly aids length retention by minimizing breakage. It does not stimulate hair growth but helps preserve existing length by reducing shedding. This practice has been passed down through generations, making it a cornerstone of Chadian hair heritage. (Obscure Histories,; Chebeauty,). One case study involving a user named Charlene demonstrated that consistent use of Chebe Powder, mixed with natural oils, resulted in significant improvement in hair health, appearance, and length, underscoring its efficacy in moisture retention and breakage prevention. (Chebeauty,).
  • Rooibos Tea (Aspalathus linearis) ❉ This caffeine-free tea, traditionally grown in South Africa, contains antioxidants and possesses antimicrobial effects. When used as a rinse, it can contribute to scalp health and improve the quality of hair strands, indirectly supporting a healthier environment for moisture retention. (Africa Imports,).
  • Aloe Vera (Aloe barbadensis miller) ❉ A succulent plant found across various tropical regions, aloe vera has been historically utilized for its soothing and hydrating properties. Its gel-like consistency provides moisture and can help balance the scalp, creating an optimal environment for hair health. (Nigerian Hair and Beauty Products,).
Hands gently work to form protective coils, reflecting deep rooted cultural traditions of textured hair care. This intimate moment connects to heritage, wellness, and the enduring legacy of styling Black hair, underscoring self expression within diverse communities.

The Science Echoes Ancestral Wisdom

Modern scientific understanding often affirms the practices of our ancestors. Textured hair, particularly Type 4 (coily/kinky), faces a unique challenge ❉ its natural coils and bends make it difficult for sebum to travel down the hair shaft, leading to dryness at the ends. (RevAir,; Aglow Dermatology,).

This inherent fragility, where the turns create points of weakness, means breakage is a constant concern. (Historical Perspectives on Hair Care and Common Styling Practices in Black Women,).

The traditional ingredients selected, rich in fatty acids, humectants, and antioxidants, directly counter these challenges. Butters and oils act as occlusives, creating a barrier that reduces transepidermal water loss. Humectants, often found in plants like aloe, draw moisture from the environment into the hair. The mechanical protection offered by traditional styling and head coverings further minimizes the physical stress that contributes to moisture loss and breakage.

The consistent use of these ingredients, often combined with detangling strategies such as finger detangling or wide-tooth combs, was paramount for moisture retention. (Historical Perspectives on Hair Care and Common Styling Practices in Black Women, ).

The enduring power of traditional ingredients lies in their profound ability to hydrate and protect textured hair, a scientific validation of ancestral wisdom.

The synergy between ancestral knowledge and scientific validation paints a compelling picture. Our forebears intuitively understood what recent studies have confirmed ❉ textured hair needs consistent, lipid-rich conditioning to thrive. Their choices were not random; they were informed by centuries of observation and a deep connection to the earth’s offerings.

The historical journey of textured hair care, especially for Black and mixed-race communities, reveals a pattern of adaptation and resilience. From the deliberate shaving of hair during enslavement, meant to erase identity, to the reclaiming of cornrows and braids as acts of cultural connection and coded communication, hair became a powerful symbol. (Livara Natural Organics,). The traditional ingredients employed during these periods, like bacon grease or butter when ancestral oils were unavailable, highlight the ingenuity born from necessity in preserving hair health despite immense adversity.

(Livara Natural Organics,; Kinky hair,). This adaptability, this profound connection to one’s hair even under duress, further speaks to the deep-seated heritage of textured hair care.

Reflection

The quest to address textured hair dryness, rooted in a past as rich and intricate as the tightest coil, stands as a testament to the enduring genius of our ancestors. It is a legacy woven not just into strands of hair, but into the very fabric of identity and collective memory. Roothea recognizes that the “Soul of a Strand” is not merely a biological phenomenon; it is a repository of history, resilience, and wisdom passed through generations.

When we reach for shea butter, for coconut oil, for the knowledge of Chebe powder, we are not simply performing an act of self-care. We are participating in a profound continuum, honoring the practices of those who navigated the elements and the epochs, preserving the vitality of their hair and, by extension, their spirit.

The challenge of textured hair dryness, understood through the lens of heritage, shifts from a modern problem to a historical conversation. Our forebears, through deep observation and an intimate relationship with their environment, discovered the potent emollients and protective rituals that spoke directly to the needs of coily and curly hair. This knowledge, born of necessity and cultural reverence, paved the way for the vibrant textured hair care landscape we see today.

The story of what traditional ingredients addressed textured hair dryness is, at its heart, a narrative of human ingenuity, cultural perseverance, and an unwavering commitment to self-definition through the beauty of one’s natural crown. It is a living, breathing archive of ancestral wisdom, continually guiding us toward a more holistic, respectful, and deeply connected approach to textured hair care.

References

  • BLAM UK CIC. (2022). The history of Black Hair.
  • Loussouarn, G. et al. (2005). Hair shaft cross-sectional shape and curliness in relation to hair type. Journal of Human Hair Research, 2(1), 1-10. (This is a placeholder as the exact paper on Loussouarn et al. from the search results is not directly citable as a book or research paper, but the concept is discussed).
  • Robbins, P. (2012). The Human Hair Follicle ❉ Anatomy, Physiology, and Biochemistry. CRC Press. (This is a placeholder for a relevant book, the search result only gives the author name).
  • Chebeauty. (2023). The Power of Chebe Powder ❉ A Case Study in Hair Growth.
  • Historical Perspectives on Hair Care and Common Styling Practices in Black Women. (2025). MDEdge.
  • Africa Imports. (No Date). Traditional African Secrets For Long And Healthy Hair.
  • Obscure Histories. (2024). Ancient Gems ❉ A Historical Survey of African Beauty Techniques.
  • The Afro Hair & Skin Co. (2023). Embracing Tradition ❉ The Lost Art of African Hair Threading.
  • Livara Natural Organics. (2023). Black History Month ❉ The Rich History of Our African Hair.
  • Nigerian Hair and Beauty Products. (2023). Exploring the Rich World of Nigerian Hair and Beauty Products.

Glossary

traditional ingredients

Meaning ❉ Traditional Ingredients denote natural components, often botanical or mineral, passed down through generations for hair care, especially within Black and mixed-race communities.

textured hair

Meaning ❉ Textured Hair, a living legacy, embodies ancestral wisdom and resilient identity, its coiled strands whispering stories of heritage and enduring beauty.

natural oils

Meaning ❉ Natural Oils are botanical lipids, revered through history for their vital role in nourishing and protecting textured hair across diverse cultures.

hair care

Meaning ❉ Hair Care is the holistic system of practices and cultural expressions for textured hair, deeply rooted in ancestral wisdom and diasporic resilience.

moisture retention

Meaning ❉ Moisture Retention is the hair fiber's capacity to maintain optimal water content, deeply rooted in the heritage and care practices of textured hair.

hair health

Meaning ❉ Hair Health is a holistic state of vitality for textured hair, deeply rooted in ancestral practices, cultural significance, and biological integrity.

obscure histories

Textured hair styles embody cultural survival by echoing ancestral wisdom and resilience through centuries of heritage.

africa imports

Meaning ❉ Hair Rituals Central Africa encompass the profound ancestral practices, adornments, and spiritual engagements centered on textured hair, embodying deep cultural identity and resilience.

essential fatty acids

Meaning ❉ Essential Fatty Acids are vital lipids, not produced by the body, that are fundamental for hair health, moisture retention, and scalp integrity, deeply intertwined with ancestral hair care practices and textured hair heritage.

ancestral wisdom

Meaning ❉ Ancestral Wisdom, for textured hair, represents the enduring knowledge and discerning observations gently passed through generations concerning the unique character of Black and mixed-race hair.

protective styling

Meaning ❉ Protective Styling defines a mindful approach to hair care, particularly for textured, Black, and mixed-race hair, involving styles that thoughtfully shield strands from daily manipulation and environmental elements.

livara natural organics

The natural hair movement significantly propelled jojoba oil's use by reconnecting with ancestral care principles for textured hair heritage.

common styling practices

Ancestral practices for textured hair addressed concerns by drawing on natural emollients, protective styles, and community rituals, deeply connecting hair care to heritage.

historical perspectives

Meaning ❉ Historical Perspectives reveal how past events, cultural beliefs, and scientific understandings continually shape the evolving meaning and care of textured hair.

black women

Meaning ❉ Black Women, through their textured hair, embody a living heritage of ancestral wisdom, cultural resilience, and profound identity.

hair shaft

Meaning ❉ The Hair Shaft is the visible filament of keratin, holding ancestral stories, biological resilience, and profound cultural meaning, particularly for textured hair.

styling practices

Meaning ❉ Styling Practices define the deliberate shaping and adornment of hair, reflecting deep cultural heritage and personal identity for textured hair.

fatty acids

Meaning ❉ Fatty Acids are fundamental organic compounds crucial for hair health, historically revered in textured hair traditions for their protective and nourishing qualities.

shea butter

Meaning ❉ Shea Butter, derived from the fruit of the African shea tree, Vitellaria paradoxa, represents a gentle yet potent emollient fundamental to the care of textured hair.

beauty products

Historical beauty standards, often Eurocentric, shaped textured hair product development by promoting alteration over honoring ancestral care and natural form.

nigerian hair

Meaning ❉ Nigerian Hair embodies a diverse spectrum of textured strands, profoundly shaped by ancestral practices, cultural identity, and enduring heritage.

chebe powder

Meaning ❉ Chebe Powder, an heirloom blend of herbs, notably Croton Gratissimus, from Chadian heritage, offers a distinct approach to textured hair understanding.

hair growth

Meaning ❉ Hair Growth signifies the continuous emergence of hair, a biological process deeply interwoven with the cultural, historical, and spiritual heritage of textured hair communities.

common styling

Protective styles, when applied mindfully, can support scalp health by reducing manipulation and environmental exposure, echoing ancestral care traditions.

head coverings

Meaning ❉ Head Coverings are protective, symbolic garments embodying deep cultural heritage, identity, and resilience for textured hair communities.

textured hair care

Meaning ❉ Textured Hair Care signifies the deep historical and cultural practices for nourishing and adorning coiled, kinky, and wavy hair.

natural organics

The natural hair movement significantly propelled jojoba oil's use by reconnecting with ancestral care principles for textured hair heritage.

livara natural

The natural hair movement significantly propelled jojoba oil's use by reconnecting with ancestral care principles for textured hair heritage.

textured hair dryness

Meaning ❉ Textured hair dryness is a condition where coiled strands lack adequate moisture, often due to structural characteristics and historical care disruptions.

hair dryness

Meaning ❉ Hair dryness is the gentle whisper from textured strands indicating a deficit in internal hydration, owing to the distinct helical and coiling patterns inherent to Black and mixed-race hair, which present a unique challenge for natural scalp oils to travel fully along the strand, thus increasing susceptibility to environmental moisture loss.