What is keratin?

Keratin is a structural protein present throughout the body. It is the main component of the skin, hair, and nails.

A keratin deficiency may result in:

  • Dull skin,

  • Brittle, weakened hair,

  • Soft or split nails.

Keratin therefore plays a central role in the strength, elasticity, and shine of our tissues.

Where to find keratin?

In food

Keratin synthesis in the body depends on certain key nutrients:

  • B vitamins: onions, broccoli, cauliflower…

  • Iron: spinach, red beans, cashew nuts…

  • Zinc: seafood, eggs, whole-grain bread…

👉 A balanced diet helps support keratin production. However, it is not always enough to meet daily needs, especially during periods of stress, fatigue, or hormonal changes.

In a keratin-based dietary supplement

To restore shiny, dense hair, strengthen your nails, or enhance your skin, you can turn to keratin-based dietary supplements with CynaPlus®:

  • Alline Procap (hair and nails),

  • Alline Proderm (skin).

Why choose CynaPlus® keratin?

1. A natural, kosher, halal, and vegetarian keratin

CynaPlus® keratin is extracted from the wool of sheep raised in New Zealand, through a patented process.

💡 Note: shearing is painless and comparable to a haircut for humans. The sheep are then released back into the pastures, and their wool naturally regrows in the autumn.

Its main advantage: an amino acid profile close to that of human keratin, ensuring optimal effectiveness.

2. Almost total absorption by the body

Unlike standard keratins, CynaPlus® keratin is supplied in the form of oligopeptides (small peptides).

Result: optimized intestinal absorption, far more effective than that of isolated amino acids.

3. A highly concentrated and complete keratin

CynaPlus® provides all 18 amino acids that make up the keratin molecule, including methionine and cysteine, essential for hair health.

This complete dosage contributes to the strength, suppleness, and shine of your hair.

  1. Rushton DH. Nutritional factors and hair loss. Clin Exp Dermatol. 2002.
  2. Données internes Alline Proderm, disponibles sur demande.
  3. Données internes Alline Procap, disponibles sur demande.
  4. Comparative amino acid profiling of mammalian keratins, Internal data.
  5. Grimble GK. The significance of peptides in clinical nutrition. Annu Rev Nutr. 1994.
  6. Boutry C. Peptide absorption in the small intestine. J Nutr. 2012.
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