Hair fiber is mostly composed of keratin, which strengthens and protects the hair against micro-aggressions. When chemical, thermal, and mechanical aggressions become too repetitive (blow drying, straightening, coloring, etc.), the keratin level degrades, and the hair becomes damaged. It becomes dry, brittle, and dull.
The type of hair also plays an important role in the scalp's balance. If the hair is oily, excess sebum can promote the appearance of oily dandruff. The hair needs to be purified, and excess sebum needs to be regulated. If the hair is dry, it lacks sebum and the scalp becomes dehydrated, uncomfortable, and may flake or itch.

To achieve healthy-looking hair, it is important to adopt an appropriate hair care routine and treat your hair gently. Limit the use of heating devices, avoid frequent coloring, use a heat protectant before drying your hair, and avoid too frequent shampooing.

Over the years, hair can become damaged when exposed to too many aggressions (heating devices, sun, coloring, straightening, etc.). The keratin level degrades, and the hair fiber is no longer sufficiently protected.
To restore beautiful hair, keratin benefits are numerous. That’s why the Vichy Kera-Solutions range is formulated with keratin and other active ingredients to help repair and regenerate damaged hair.
The Kera-Solutions Dercos shampoo combines a pro-keratin complex with allantoin to repair, nourish, and detangle damaged hair. Combine it with the Kera-Solutions Dercos conditioner to repair the hair fiber while respecting the sensitive scalp."