Nutrafol Women's Hair Serum, Supports Visibly Thicker and Stronger HairDescription Physician formulated, lightweight and fast absorbing to replenish nutrients at the scalp. Formulated without silicones, sulfates, and parabens. Other products dont compare, this serum is setting the standard for scalp care. Benefits Visible hair thickness, strength, and reduction in breakage. Results in as little as 90 days. Suggested use Apply once daily to the scalp. For best results, pair with Nutrafol hair growth supplements.