Imagine your hair looking thicker and feeling fuller for days. L'Oreal Advanced Haircare Volume Filler Thickening Ampoulles is an in-shower weekly treatment for volume that lasts through 5 washes. This concentrated formula with FIlloxane fills and thickens each hair strand from within for visibly thicker hair. Gives hair an instant thickening effect. Creates visibly more hair volume over time. For fine, thin hair.