The Science of Hair Keratin At a molecular level, keratin is a type of fibrous structural protein rich in sulfur-containing amino acids, particularly cysteine. Keratin and Moisture Balance While often associated with strength, this protein also plays a vital role in moisture regulation.
How Keratin Naturally Restores Hair Elasticity and Strength
This depletion is why damaged hair often feels mushy or straw-like; the structural matrix is compromised. This matrix is what gives hair its incredible tensile strength, allowing it to stretch and return to its original shape without breaking.
Replenishing these proteins through treatments helps to restore the hair's ability to hold onto moisture, leading to smoother, more hydrated strands that are less prone to frizz. These amino acids form strong disulfide bonds, which create a rigid and durable matrix.
How Keratin Restores Hair Elasticity Naturally
When the hair loses its natural protein content, it struggles to retain water, resulting in a parched, frizzy appearance. Hair that is rich in this protein can stretch slightly when wet and return to its original length without snapping.
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