Kerastase Densifique Fondant Densite 6.8 oz is widely acclaimed as the best volumizing conditioner for fine hair, bar none. This satiny conditioner multi-tasks to nourish, strengthen, thicken and gently detangle delicate, vulnerable tresses. The eye-opening result is visibly-thicker hair, improved texture and body, plus a longer-lasting hairstyle enlivened by buoyant lightness and lift. The luxury Kerastase Paris brand does not disappoint.