Discover Kérastase Chronologiste Pre-Cleanse Régénérant, a youth revitalizing purifying pre-shampoo to deeply cleanse scalp and roots. Used before your shampoo, Pré-Cleanse Régénérant helps remove up to 96% more pollution particles than a regular shampoo. Enriched with Hyaluronic acid, it helps hydrate and moisturize. With a thick luxurious black gel texture, the Pré-Cleanse Régénérant is a sensorial experience. Infused with the signature Chronologiste scent of fine fragrances, including tea rose, light woods and musk. Purifying & detoxifying pre-wash to promote a healthy scalp.