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Hair Is Dead Keratin Determined By Follicle Shape
- Hair is a dead keratin shaft so its visible part cannot biologically repair itself.
- Curl pattern and strength come from follicle shape and internal bonds like disulfide bonds, which are genetically determined.
Cuticle Shape Explains Why Hair Types Behave Differently
- Different hair types mainly differ in how the outer cuticle scales lie, affecting moisture loss or retention.
- Afro hair tends to have a flatter, more oval shaft so cuticles don't lie flat, increasing moisture flux.
Avoid Regular High Heat Styling
- Avoid frequent high heat styling because it breaks the cuticle and can denature hair protein leading to permanent damage.
- Regular high-temperature straightening or colouring often causes severe breakage and texture changes.