What it is: An overnight treatment that stimulates the scalp and follicles, combating hair fall and supporting hair growth for thicker-looking strands.Hair Type: Fine, Medium, and ThickHair Texture: Straight, Wavy, Curly, and CoilyHair Concerns:- ThinningKey Benefits: - Addresses hair fall- Stimulates the scalp and hair follicles- Visibly thickens hairHighlighted Ingredients:- Caffeine Powder 1%: Stimulates the scalp and hair follicles. - Redensyl™ 1%: Supports hair growth and combats hair fall. - Betaine 1%: Conditions hair, leaving it soft and healthy. Ingredient Callouts: This product is vegan, cruelty-free, and comes in recyclable packaging.What Else You Need to Know: This serum combines caffeine powder and Redensyl™ to stimulate your scalp and hair follicles while you sleep, setting the stage for hair growth while defending against hair fall for visibly improved thickness. The fragrance-free formula also contains one percent betaine, a deeply conditioning ingredient that leaves hair soft and healthy. CLEAN at Sephora is our commitment to offering formulas that go beyond regulatory standards to avoid controversial ingredients without sacrificing on effectiveness.