(EXP:09/2027) L'Oréal Professionnel Série Expert Inforcer Mask is a strengthening hair mask for damaged and fragile hair. The reinforcing formula of this hair mask will significantly reduce breakage and visibly diminish split ends. Moreover, with continued use, this mask will help to strengthen the hair and make it more resistant to everyday aggressions. With Biotin, this mask is sure to give the hair a renewed and healthy appearance. This vitamin helps to repair and restore the thickness of the hair fiber which is particularly important for fragile hair. Additionally, vitamin B6 encourages keratin production, which is an essential protein to keep the hair healthy. Finally, this mask will also deeply condition the hair while making it shinier, softer, and easier to detangle.