Q-Sera AD Anti-Dandruff Night Scalp Leave-In Hair Serum is a clinically proven scalp treatment formulated to target persistent dandruff, reduce visible flakes, and control recurrence while soothing irritation overnight, featuring a lightweight leave-in formula that works on the scalp barrier to restore balance and improve scalp health. Enriched with actives like Salicylic Acid and Piroctone Olamine along with postbiotic-derived ingredients, this serum helps exfoliate buildup, purify the scalp, and support microbiome balance, while conditioning agents ensure hydration without greasiness, making it suitable for regular overnight use for long-lasting dandruff control and improved scalp comfort.