This leave-in Molecular Repair Hair Mask K18 Biomimetic Hair Science (50 ml, €65 or 5 ml, €12, Bleu Libellule) takes no more than four minutes to repair damage caused by coloring, bleaching, chemical services and heat.

This treatment, tested and approved by star hairdressers across the Atlantic, owes its name to the patented K18 peptide discovered by the laboratory after ten years of research.
The brand scanned and tested all the amino acid sequences that make up the keratin genome of hair before discovering this unique sequence that reverses damage and restores strength, smoothness and bounce to damaged hair. The K18 peptide penetrates deep into the inner layers of the hair. Its precise size, structure and composition allow it to insert and reconnect broken keratin chains.

Very easy to use, simply apply it to damp, towel-dried hair after shampooing (making sure not to use a conditioner or mask). Spread the treatment all over the hair, working from the ends to one centimeter from the roots. Leave it on for four minutes, then style according to your habits. Since the formula is very concentrated, a small amount is enough (a very precise table is provided in the instructions).

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