DS Laboratories Dandrene High Performance Antidandruff Shampoo is your 21st century breakthrough your best opportunity to brush off dandruff once & for all. Formulated with high-performance ingredients it attacks dandruff to rid your scalp of flakes. A five-way formulation of ingredients & a potent cocktail of the latest scientific methods means this ultra-premium treatment helps you achieve your best antidandruff results yet. Now you can go ahead wear black & not give dandruff a second thought. Directions of use: Apply to wet hair lather & rinse. Repeat this time leaving on the scalp for 1-2 minutes. Use 3-4 times per week. Use only as needed to control dandruff