Kérastase chronologiste longevity potion is a rejuvenating scalp serum developed with a focus on hair ageing research. Its concentrated formula helps revitalise the scalp and root environment, helping hair look healthier, thicker and more vibrant. It is designed for hair showing signs associated with ageing, such as reduced volume, lack of thickness, dullness and frizz. The formula is enriched with the caviar of longevity complex, combining highly concentrated 3% pro-xylane with ochrophyta algae. Pro-xylane helps support hair thickness and density, while the marine-derived ochrophyta algae extract helps revitalise the scalp and provides regenerative care. The lightweight serum absorbs quickly without leaving residue, while immediately hydrating the scalp. Used as a 1-month intensive treatment, it helps care for the scalp and maintain healthier-looking, more youthful-looking hair. Key benefits: helps revitalise the scalp and root environment. Helps support hair thickness and density. Provides immediate hydration to the scalp. Helps hair look healthier, thicker and more resilient. Helps enhance hair volume. Absorbs quickly without leaving residue. Suitable for sensitive and mature scalps. Leave-in formula no rinsing required. Designed as a 1-month intensive treatment. Key ingredients: pro-xylane a bio-derived sugar molecule that helps support hair thickness and density by stimulating cellular activity within the scalp and hair follicles. Ochrophyta algae a marine-derived ex...