Keratin and collagen: why these active ingredients truly transform your hair

Keratin, collagen... these active ingredients are everywhere on hair care labels, sometimes to the point of losing their meaning. Here is what they really do, and why their combination is particularly effective.

Keratin, the hair's building block

Hair is composed of approximately 95% keratin, a structural protein. Every form of damage—heat, coloring, friction—depletes this natural resource. A treatment enriched with keratin fills these micro-lesions on the surface of the fiber, which explains the immediate softening and smoothing effect after application.

Collagen, for suppleness and resilience

Less well known in hair care than keratin, collagen nevertheless plays a complementary role: it helps retain moisture in the fiber and restore its elasticity. Well-hydrated and supple hair resists breakage better than dry hair, even if it is rich in keratin.

Why combine them rather than choosing one

Keratin and collagen act on two different levels: structure on one hand, hydration and suppleness on the other. This is why our Repairing Keratin & Collagen Mask combines both active ingredients rather than relying on just one—for deep repair that sacrifices neither strength nor suppleness.

How to use it properly

• Apply to washed and towel-dried hair, from mid-lengths to ends.
• Leave on for 5 to 10 minutes depending on the level of damage.
• Rinse with lukewarm water to close the cuticles and seal in the benefits of the treatment.
• Use 1 to 2 times a week in addition to the daily serum.

For visibly stronger and more supple hair from the very first uses, discover the Ambralya Keratin & Collagen Mask.