Benefit Cosmetics Hubba Brow is a brow-enhancing serum formulated to improve the appearance of brow volume and fullness over time. The lightweight, clear formula contains Pro‑Vitamin B5 (panthenol) to condition and improve brow-hair sheen, biotin and cassia alata leaf extract to support the look of fuller brows, and hydrolyzed rice protein plus antioxidant plant extracts such as asiaticoside to help strengthen and protect hair. The serum is applied with a flexible micro‑bristle tip that allows precise, even coverage across the brow line. Regular daily use on clean brows—sweeping the applicator from base to tail—helps condition hairs, enhance natural density, and improve overall brow appearance within weeks. The formula is free of prostaglandin analogs and is described by retailers and the brand as gentle and suitable for sensitive skin. It can be used alone as a conditioning treatment or under brow makeup. Skin concerns addressed include thinning or sparse brows, lack of sheen, and weakened hair fibers that benefit from conditioning and strengthening actives. Improves appearance of brow volume for fuller, healthier-looking brows in as little as 4 weeks. Biotin and provitamin B5 condition and strengthen brows for fuller, healthier-looking hair. Targets sparse or thinning brows — helps enhance brow density for fuller-looking, defined brows. Clear, lightweight gel‑serum that glides on, feels non‑sticky and coats brow hairs smoothly. Dermatologist-tested for gentle, non‑irritating use around brows. important information This product is for external use only