CLEAN HAIR. HEALTHY SCALP. Light-as-air dry cleansing technology for scalp and hair that feel just washed. This healthy scalp dry shampoo is clinically proven to not clog pores or leave a white residue. No more dry, powdery roots or gritty buildup. Nº.4D is proven to leave hair looking and feeling clean. KEY BENEFITS – Clean, weightless body – Detoxifies scalp – No grit or powdery residue – No clogged pores CONSUMER STUDY RESULTS 100% saw no white residue 97% said their hair looked clean 97% saw a reduction of oil* Your health and safety are our top priority. Benzene test results: NOT DETECTED (<0.1 ppm)