KERASTASE Fusio-Dose Booster, Densifique, 4.059 Ounce  (120.07 ml)

An intensive densifying booster for fine or thinning hair. Boasts a powerful formula isolated in its purest and most concentrated state. Contains active ingredients freshly fused to create a customized in-salon treatment. Helps intensely texturize hair fiber and reinforce the cohesion. Delivers visible, instant and lasting transformation in just five minutes. Works together with other Concenters to create various personalized combinations. Hair appears more toned, densified and voluminous.