A Brand you can Trust- Person and Covey has been working alongside the scientific community to bring you the best in safe, gentle skin and hair care products since 1941. How To Use- After getting your hair wet, apply a generous amount of shampoo and massage to a rich lather, then let sit for several minutes. Repeat as necessary. Dermatologist-recommended- Not only is it fast-acting, this medicated shampoo is clinically proven to prevent the recurrence of flaking and scalp build-up with regular usage. Long-term Relief- Formulated with Salicylic Acid to reduce oil, soothe itchiness and break down dry, flaky skin, leaving your scalp softer and hair healthier. DHS SAL Shampoo- Get relief from itchy scalp, flaky dandruff, and other dry scalp issues with our shampoo medicated with 3% Salicylic Acid. Successfully treating seborrheic dermatitis, psoriasis, and eczema.