Hair & Scalp SciencesPregunta 71 de 100
Hair elasticity, the ability of hair to stretch and return, is determined mainly by bonds in the:
a.Cortex
b.Cuticle
c.Medulla
d.Sebaceous gland
Explicación
The cortex contains the hydrogen and disulfide bonds that give hair its strength and elasticity. Damaged cortex bonds leave hair weak and prone to breakage.
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