
What specific molecular changes occur in textured hair due to sleep friction?
Sleep friction causes molecular changes in textured hair by abrading the cuticle, stripping protective lipids, and disrupting hydrogen bonds, leading to increased frizz and breakage.

What are hair’s main protective lipids?
Hair's main protective lipids, primarily 18-MEA, ceramides, and cholesterol, form a vital barrier against moisture loss and external damage.

How do chemical treatments impact hair’s natural moisture?
Chemical treatments disrupt hair's protective layers and natural moisture balance, leading to increased porosity and dryness.