Recommended by dermatologists. Shampoo person overactive ingredients: Solubilized coal tar extract (0.5% coal tar) 2.9% wet hair thoroughly apply a liberal quantity of DHS tar shampoo and massage into a lather. Allow lather to remain on the scalp for several minutes. For best results use at least twice a week or as directed by a physician. Inactive ingredients: Purified water tea lauryl sulfate sodium chloride peg-8 distearate cocamide DEA cocamide mea citric acid uses: Controls the symptoms of dandruff seborrheic dermatitis and psoriasis. Recommended by physicians for the control of scalp itching and flaking symptomatic of chronic scalp psoriasis seborrhea and dandruff. For external use only. If the condition worsens or does not improve after regular use of the product as directed consult a physician. Use caution in exposing skin to sunlight after applying this product. It may increase your tendency to sunburn for up to 24 hours after application.