A22 Biotin Boost Hair + Scalp Serum

A22 Biotin Boost Hair + Scalp Serum is a lightweight, fast-absorbing scalp treatment formulated to support thicker, fuller, healthier‑looking hair. It blends biotin, niacinamide, caffeine, rosemary oil and over 100 natural vitamins, minerals, amino acids, and essential oils to energize the scalp, nourish hair follicles, and address signs of thinning and shedding. The formula is dermatologically tested, and free of parabens, silicones, sulfates, and designed to be residue‑free. To use, shake well and apply 6–8 sprays directly to dry or damp scalp, then massage in; do not rinse off. According to the brand, 97 % of users saw visible improvements (thicker, stronger, fuller, shinier hair) within one month in a consumer study.