Keratin: all products

Keratine is the structural protein that naturally makes up hair, nails, and the outer layers of the skin. Over time, stress, heat, and chemical agents reduce its presence, making external supplementation necessary. Our collection features over 667 references — shampoos, masks, serums, professional treatments, and dietary supplements — selected to meet the needs of those who wish to support the health and appearance of their hair and nails with specially formulated products.

How to choose the most suitable keratin product for you

The first criterion for selection is the method of use: topical cosmetic products (shampoos, conditioners, masks, serums) act on the surface of the hair and nails, depositing hydrolyzed keratin that smooths and strengthens the outer structure. Dietary supplements, on the other hand, are taken orally; for these products, we encourage you to read the label carefully and, in case of doubt, consult your doctor or pharmacist before use. Also consider the concentration of keratin indicated on the label and the presence of synergistic ingredients such as biotin, zinc, or collagen peptides in supplement formats, or plant oils and plant proteins in cosmetics.

A common mistake is to purchase based solely on format without considering your hair or nail type: those with fine hair tend to prefer spray formulations or lightweight serums, while those with very porous or frequently colored damaged hair will benefit more from rinse-out masks with longer application times. Always read the INCI: the position of keratin in the ingredient list indicates its actual concentration in the product.

Frequently Asked Questions

Cosmetic keratin and keratin in supplements: what is the difference?

Keratin in cosmetics acts externally, coating the surface of hair and nails. Keratin in supplements is taken orally: consult your doctor or pharmacist to assess if it is appropriate for you, reading the instructions on the label of the chosen product.

Is hydrolyzed keratin more effective than non-hydrolyzed keratin in cosmetics?

The hydrolyzed form has a reduced molecular weight, which promotes better penetration into the outer layers of the hair. It is generally the most common formulation in professional and at-home cosmetic treatments.

How often should keratin cosmetic treatments be used?

It depends on the product: shampoos and conditioners are used with every wash, while masks are generally used once or twice a week. Always follow the usage instructions on the packaging to achieve optimal results without weighing down the hair.