Long hair often shows weakness where it matters most: at the ends. Pro Longer Serum by L’Oréal Professionnel is a high-performance targeted treatment designed for long hair with thinning or fragile ends. Its professional formula, highly concentrated with FILLER-A100, an exclusive patented molecule, and strengthening amino acids, works directly on the last 7 centimeters of the hair fiber. It instantly replenishes, thickens and strengthens the ends for long-lasting density and resilience. Used once a week in place of conditioner or mask, this precision serum helps preserve length while keeping ends full, strong and healthy-looking.
On wet hair, before using Pro Longer shampoo, apply on ends and lengths, insisting on strands with breakage. Let sit for 5 minutes, then rinse well with water. Follow with Pro Longer shampoo. Can be used weekly, or once every 3 to 5 shampoo.
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