Meaning ❉ Polygenic hair traits describe the characteristic where multiple genes collectively influence a single hair attribute, such as curl pattern, strand diameter, density, or porosity. For textured hair, this explains the vast diversity of textures seen across Black and mixed-race individuals, moving beyond simple classifications to acknowledge a deeper genetic blueprint. Understanding this principle shifts our approach to textured hair care, suggesting that truly effective routines stem from observing a hair’s unique responses rather than adhering to rigid, generalized systems. Each strand holds a complex genetic story, informing how it interacts with moisture, responds to products, and holds its shape. This knowledge guides the systematization of routines, allowing for a more responsive and adaptive approach to care, where practices are tailored to the hair’s specific, genetically influenced needs. Practical application means recognizing that a hair’s distinct requirements for hydration or protein are not arbitrary but are deeply rooted in its inherited genetic makeup, leading to more precise and beneficial care decisions.
