Keratin

Keratin is a natural, insoluble, fibrous protein found in large quantities in the appendages, i.e., nails, hair, and fur, in both humans and animals. It is also responsible for the strength, flexibility, and shine of hair.

Chemically, keratin is composed of amino acids, including cysteine, methionine, lysine and arginine, which give it its strength and resilience.

However, over time, the body's natural keratin production decreases, which can weaken hair and make it more prone to breakage. That's why maintaining a good keratin level is important for healthy hair.

Keratin is a valuable ally for hair, and here's why:

Strengthens and coats the hair fiber

By forming a protective layer around the hair, keratin protects it from external aggressions such as the heat of styling tools, UV rays from the sun or pollution.

Repairs damaged and brittle hair

Keratin penetrates deep into the hair fiber and helps repair damaged and brittle hair. It is also responsible for hair elasticity, preventing breakage during brushing, for example. Hair is visibly healthier and stronger.

Smoothes and reduces frizz

Keratin also has smoothing properties that allow for long-lasting hair smoothing, reduced frizz, and improved shine and suppleness.

Hydrates and adds shine

By sealing in moisture, keratin helps retain hydration and prevent dryness. Well-hydrated hair is not only softer and more supple, but also reflects light better, giving it a shinier, healthier appearance.

Accelerates growth

Keratin is a natural protein that strengthens hair and stimulates its growth. It works by filling gaps in the hair fiber, protecting it from external aggressors, and stimulating blood circulation in the scalp.

The use of keratin-based products can improve hair strength, and thus promote optimal growth.

Here are some signs that may indicate a lack of keratin:

• Dull and brittle hair: Hair lacking keratin tends to become dull and fragile. If your hair breaks easily and seems to lack vitality despite proper care, this could indicate a keratin deficiency.
• Loss of hair volume : a decrease in hair density can also be a sign of keratin deficiency. Hair may appear flat, thin, and lack vitality.
• Slowing of hair growth : slower growth and hair that seems to plateau at a certain length.
• Brittle nails : nails are also composed of keratin. A lack of this protein can manifest as brittle nails that split easily or break frequently.

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