@kate_olsonhair: Customized. Concentrated. Instant transformation. ✨ Kérastase Fusio-Dose mixes skincare-level actives for your exact hair needs, with 30 combinations and results in just 5 minutes. We used an amino acid concentrate post-color to strengthen, repair, and improve elasticity, paired with a polypeptide booster to smooth, soften, and boost shine. #Kerastase #FusioDose #LuxuryHair #HairTok #HealthyHair @Kérastase @Ochoa for Hair @Britt @Kerastase/Shu Uemura