Helps reduce hair loss, strengthens hair bulb fixation, and improves hair fiber resistance, for thicker, stronger-looking hair. Uriage AP Hair Anti-Hair Loss Serum is an intensive hair care product developed to address various factors associated with hair loss, including seasonal changes, stress, fatigue, and external aggressors. Its formula combines trichopeptides, caffeine, arginine, and vitamins C and E, ingredients that contribute to the care of the scalp and hair fiber. Trichopeptides help stimulate the mechanisms associated with hair growth factors. Caffeine, arginine, and vitamins C and E complement the formula, contributing to the care of the hair bulb and scalp microcirculation through massage. The serum helps strengthen hair bulb fixation and improve hair resistance, helping to reduce breakage. According to the manufacturer, hair appears thicker from the first application, looking denser and stronger. The lightweight texture, requiring no rinsing, does not leave hair oily and facilitates styling. The product has been dermatologically tested and can be used on all scalp types, including sensitive scalps.