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Keratin, a natural protein for weakened hair
Keratin is a natural protein that makes up 95% of the hair fiber and plays a fundamental role in hair strength, shine, and resistance. This protein forms a protective barrier around the cuticle and maintains hair's flexibility. However, over time, due to coloring, UV rays, or stress, keratin degrades, and hair becomes dull, dry, and brittle.
Fortunately, it is possible to compensate for this loss through natural supplementation to revive your hair. Biocyte's keratin hair supplements provide a targeted and natural solution, designed to strengthen the hair fiber from within.
SUMMARY
What is keratin?
Keratin is a natural fibrous protein produced by the human body and primarily found in hair, nails, and skin. Its complex structure allows it to form a strong and impermeable protective barrier around the hair, making it resistant to external aggressions. This protein is composed of essential amino acids, including cysteine, methionine, and glycine, which create disulfide bonds responsible for hair's strength.
There are two main forms of keratin:
- Hydrolyzed keratin: often used in hair care products (shampoos, masks, serums), it acts on the surface, smoothing and coating the hair.
- Water-soluble keratin: resulting from a patented process (such as Cynatine®), it is bioavailable and acts from within, via keratin food supplements.
It is this water-soluble form that has shown the most significant results on hair strength, shine, and regrowth, while also strengthening fragile nails.
The benefits of keratin protein supplementation
A keratin regimen deeply repairs hair and acts on several levels of the hair fiber.
Deep hair repair and strengthening
Water-soluble keratin nourishes the hair fiber from the inside out. It fills in gaps in the hair and restores the cohesion of keratin cells, bringing back strength and elasticity.
Action on the cuticle: protection and shine
The cuticle, the outer layer of the hair, acts as armor. Under the effect of keratin, its scales close, making the hair smoother, softer, and shinier.
Action on the cortex: structure and resistance
The cortex is the heart of the hair. Keratin protein supplementation helps to restructure this internal area, strengthening the fiber from within and limiting breakage.
Stimulation of the hair growth cycle
Keratin also acts on the anagen phase, the active growth period of hair. By extending this phase, it promotes better hair density and more regular growth.
To learn more, discover how keratin supports healthy hair growth according to Biocyte experts.
Proven effects on nails
Studies on Cynatine® show a noticeable improvement in nail strength after 30 days. Nails become less brittle, smoother, and grow faster.
Why does your hair need keratin protein?
Every day, your hair is exposed to multiple external aggressions: pollution, UV rays, heat from hair dryers, or chemical treatments. These factors degrade natural keratin, weakening the hair fiber.
A deficiency in keratin protein results in hair that is:
- brittle and dull
- split at the ends
- lacking volume and flexibility
- difficult to style
At Biocyte, we recommend a supplement routine with keratin at the first signs of fragility or after aggressive treatments.
For very damaged hair, discover our article on keratin for very damaged hair.
When to take keratin?
Keratin supplementation is ideally integrated into a seasonal or restorative routine depending on your hair's needs.
- At each change of season: a 1-month program to strengthen the fiber and prevent seasonal hair loss.
- For regular maintenance: 1 month every 3 to 4 months to maintain vitality and shine.
- For damaged or colored hair: a 3-month routine is recommended for complete repair.
- For brittle nails: keratin also acts on their growth and strength.
Effective combinations with keratin
To optimize the effects of a keratin routine, certain natural combinations enhance hair health and stimulate its growth.
Vitamins B6, B8 and zinc: regenerating trio
These micronutrients support keratin synthesis and promote hair regrowth. They also help to regulate sebum production, for a balanced scalp.
Brewer's yeast: beauty and vitality
Rich in amino acids and B vitamins, brewer's yeast is an ideal natural supplement for improving hair texture and enhancing its shine.
L-Methionine and cystine: structure and resistance
These two sulfur amino acids directly participate in keratin formation, supporting the hair's internal structure and limiting breakage.
For a comprehensive approach, discover all Biocyte keratin food supplements, formulated for stronger, shinier, and healthier hair.
In conclusion
Keratin protein is an indispensable ally for those who wish to strengthen their hair naturally. In addition to a gentle hair care routine, it helps to repair, protect, and revitalize the hair fiber deep down.
FAQ - Keratin, natural protein
How long does it take to see the effects of a keratin regimen?
The first results appear after 30 days, with softer and more resistant hair. After 2 to 3 months, the fiber is visibly denser and shinier.
Can keratin protein be taken all year round?
Yes, but it is advisable to take breaks between doses, for example, 1 month out of every 3. This allows your body to naturally regulate keratin production.
Are there any contraindications to taking keratin protein?
Keratin-based supplements are well tolerated and have no known risks at recommended doses. However, pregnant or breastfeeding women should seek their doctor's advice before any supplementation.
Sources
- Zague, V. et al., "Hydrolyzed keratin peptides improve hair strength and elasticity", Journal of Cosmetic Dermatology, 2018
- Cynatine® HNS Clinical Studies, Keratec Research Group, 2015
- Giesen, M. et al., "Keratin supplementation for brittle nails and hair", International Journal of Trichology, 2020
- Biocyte Laboratoire, Études internes sur la biodisponibilité de la Cynatine® HNS, 2022
- European Food Safety Authority (EFSA), Guidelines on hair and nail health claims, 2017
