L'Oréal Professionnel Serie Expert Pro Longer Mask 250ml Mens Haircare 0 as the first step

0 as the first step in a two-part at-home system with No

Panthenol PVP

leave for longer to allow overtoning to take place for lilac and purple hues to appear

The conditioning oils make hair manageable and smooth

Nioxin System 4 hydrates scalp and hair from root to tip to provide thicker

L'Oréal Professionnel Serie Expert Pro Longer Mask 250ml Mens Haircare 0 as the first stepL'Oral Professionnel's Pro Longer mask 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 on thin ends, or