FRUCTIS HIDRA LISO 72H Fructis mask. Fortifying mask for hair that is difficult to straighten. Its formula combines fortifying active ingredients of fruits, natural argan oil and phyto-keratin, ingredients with restorative properties to protect the hair fiber from frizz. Leaves hair straight for up to 72 hours with moisture. Apply to damp hair, leave on for 3 minutes and rinse.