The Longevity Potion is a leave-in scalp concentrate and new to Kérastase's Chronologiste line. The formula contains 3% Pro-Xylane and Ochrophyta algae, which the brand calls its 'caviar of longevity', and it is designed to stimulate scalp activity within a month, so hair keeps looking younger for longer. That claim is Kérastase's own laboratory (ex-vivo) finding: this is a course of weeks, not the effect of a single wash. Using it is simple. Shake well, apply five doses to the towel-dried scalp and roots, section by section, and don't rinse. In a Chronologiste ritual at the salon it is step four, after the bath, the mask and the massage. In autumn, when hair leaves the summer behind, it's a logical moment to start at the foundation.
A month-long course, not a one-night trick.
Chronologiste — the ritual for her and her scalp
Chronologiste isn't just another wash — it's a moment of indulgence that calms the scalp and nourishes hair from root to tip.
Specifique — calm for a sensitive scalp
A restless scalp calls for a targeted approach. Specifique Divalent soothes and rebalances, laying the foundation for hair that looks healthy.
Fusio-Dose — bespoke care, mixed fresh in the salon
No two heads of hair are the same, so why should the treatment be? Fusio-Dose is freshly blended in the salon to match exactly what your hair needs.