Most clients see results after one use of Masque Intense Régénérant. When using the full Chronologiste hair care regimen of Pre-Cleanse Régénérant, Bain Régénérant, Masque Intense Régénérant, Thermique Régénérant, and Huile De Parfum, the better the results will be. For optimal results, we encourage you to find a Kerastase Salon near you to experience the exclusive Chronologiste In-Salon Treatment.