L'Oréal Professionnel Pro Longer Liquid Concentrate Makeup which features a blend of

which features a blend of keratin

A leave-in heat protectant and strengthener for damaged hair

It’s meant to be used in between washes

80% less breakage*

L'Oréal Professionnel Pro Longer Liquid Concentrate Makeup which features a blend ofL'Oral Professionnel's Pro Longer concentrate treatment thickens long hair for visibly healthier and stronger looking lengths. When used with the Pro Longer shampoo and ends filler treatment for long hair, split ends are reduced visibly by 66%.* The unique Filler A 100 technology works by penetrating the fiber core to plump and thicken the hair from the inside. Amino acids in the formula work to strengthen the hair from the outside. The formula works