Keratin Hair

What is hair keratin?

Hair keratin is an essential fibrous protein, making up almost 95% of the hair fiber. Synthesized by keratinocytes in the hair follicle, it plays a fundamental structural role by ensuring the cohesion of the hair scales. This specific molecular organization gives hair its mechanical strength, elasticity, and its smooth, shiny appearance.

However, this structure can be altered by exogenous factors such as UV rays, heat, pollution, or chemical treatments. As a result, the hair fiber becomes fragile, leading to damaged, dull, or brittle hair. It is in this context that keratin-enriched treatments, such as Biocyte's Keratine Max, particularly in the form of hydrolyzed keratin, become particularly relevant for restoring hair structure.

Why is hair keratin essential for hair fiber?

Keratin for hair acts as a true intercellular cement. It ensures the cohesion of keratinized cells and maintains the integrity of the cuticle, the hair's primary protective barrier. When this layer is intact, it limits water loss and protects the cortex, which is responsible for the hair's strength and suppleness.

When keratin is degraded, hair becomes more vulnerable. In vitro studies have shown that a hair fiber deficient in structural proteins exhibits a significant decrease in its tensile strength. Conversely, the application of keratin treatment fills gaps in the cuticle, thereby improving the overall quality of the hair. This approach is particularly effective for brittle hair or hair sensitized by repeated aggressions.

What are the benefits of hair keratin?

The integration of keratin into a hair care routine works on several levels. Firstly, it promotes hair repair by restructuring damaged areas of the fiber. Hydrolyzed keratin, thanks to its low molecular weight, penetrates the cortex more easily and strengthens the internal structure of the hair.

Secondly, keratin acts as a sheathing agent. It smooths the hair surface, thus reducing frizz and improving light reflection. The result: shiny hair, softer and more manageable. Clinical studies (instrumental evaluations on treated strands) show a measurable improvement in hair shine and strength after several applications of repairing treatment enriched with keratin.

Finally, keratin helps to improve manageability. Hair is easier to style, less prone to breakage, and regains a visibly healthier appearance, especially when dry or weakened.

Who are hair keratin treatments for?

Keratin treatments are suitable for a wide range of hair types. They are particularly recommended for damaged hair, which has undergone repeated coloring, bleaching, or thermal straightening. In these cases, the hair structure is altered, requiring targeted hair repair.

Dry hair or brittle hair also benefit from these treatments, as keratin helps restore fiber cohesion and limit water loss. Similarly, curly or frizzy hair, often more porous, can benefit from keratin to improve its definition and suppleness.

Finally, people who want to optimize the appearance of their hair, particularly by seeking smooth and shiny hair, can integrate hair keratin into their hair routine for both aesthetic and functional effects.

What types of keratin hair products should you choose?

Today there is a wide range of keratin-based products, each meeting specific needs. Keratin shampoos provide gentle cleansing while offering a first level of repair. They are ideal for frequent use and for maintaining benefits over time.

Keratin masks, which are more concentrated, offer deep action. Their prolonged application time promotes the penetration of active ingredients into the hair fiber, thus strengthening the hair structure. They are particularly suitable for highly sensitized hair.

Serums and leave-in treatments, meanwhile, act on the surface to protect the fiber and instantly improve the appearance of the hair. Finally, keratin straightening solutions offer a more intense action, aiming to durably restructure the fiber for a prolonged straightening effect.

In a global approach, food supplements enriched with keratin, developed by expert laboratories like Biocyte, allow action from within by supporting the physiological mechanisms of keratin production.

How to incorporate hair keratin into your hair care routine?

Integrating keratin into a hair care routine relies on a progressive and consistent approach. It is recommended to combine several types of care to maximize the effects: a keratin shampoo for cleansing, a keratin mask for deep repair, and a leave-in treatment to protect the fiber daily. In addition, regular use of these products helps maintain an optimal concentration of keratin within the fiber. The results are even more visible when this routine is combined with a balanced diet and targeted intake of essential nutrients.

Nutricosmetic protocols, incorporating specific biomolecular active ingredients, represent an innovative approach. Biocyte, a pioneer in this field, offers solutions combining scientific expertise and clinically evaluated results to support hair beauty from within.

Hair keratin: natural or hydrolyzed, what are the differences?

Hair keratin can come in different forms, particularly natural or hydrolyzed. Natural keratin, although structurally similar to that of hair, has a large molecular size, limiting its penetration into the fiber. Conversely, hydrolyzed keratin is fragmented into smaller peptides, facilitating its absorption. This form is particularly used in keratin treatments because it allows for more targeted action at the cortex level, where the heart of the hair structure is located.

Comparative studies show that formulations containing hydrolyzed keratin significantly improve the strength and suppleness of hair after several applications. This type of active ingredient is therefore favored in repairing treatments intended for weakened hair, as well as in the best hair supplements.

What results can be expected with hair keratin?

The results related to the use of hair keratin are progressive and depend on the regularity of use as well as the initial state of the hair. From the first applications, an immediate cosmetic effect is observable: softer, shinier, and easier to style hair.

In the medium term, hair repair becomes more visible. Hair gains strength, breakage decreases, and the fiber regains better cohesion. Instrumental measurements (tensile and elasticity tests) confirm a notable improvement in fiber quality after several weeks of use.

Finally, in the long term, a hair care routine enriched with keratin helps maintain visibly stronger, more supple hair that is durably protected against external aggressions.

FAQ – All about hair keratin

Does hair keratin make hair grow?

Hair keratin does not directly stimulate growth, but it improves the quality of existing hair fiber. By limiting breakage, it helps maintain length and optimize the overall appearance of the hair.

Is hair keratin suitable for all hair types?

Yes, keratin is suitable for all hair types. However, it is particularly beneficial for weakened, dry, or damaged hair.

Can hair keratin be used every day?

Daily use of certain products like keratin shampoo is possible, provided that gentle formulas are chosen. More concentrated treatments should be used less frequently.

What is the difference between a keratin treatment and keratin straightening?

Keratin treatment aims to repair and strengthen the fiber, while keratin straightening temporarily modifies the hair structure for a prolonged straightening effect.

Does hair keratin damage hair in the long term?

Hair keratin-based treatments are designed to improve hair quality. However, certain technical procedures such as some straightening treatments should be performed with caution.

How long does it take to see the effects of hair keratin?

The first effects are visible quickly, especially concerning shine and softness. Structural benefits generally appear after several regular applications.