L'oreal Professionnel presents Serie Expert Pro Longer, the 1st professional line that renews lengths and fills-in ends, powered by the patented thickening technology Filler-A100. No more trade-off between length and thickness.

PRO LONGER presents an exclusive combination of FILLER-A100 + AMINO ACID

FILLER-A100
a patented technology owned by L'oreal Professionnel only, penetrates the fiber core to thicken ends, and resurfaces.

AMINO ACID
allows the renewing of lengths and brings strength to the fiber