Antidandruff shampoo and antiseborreico trafficker. Use. Apply on the scalp Piroxgel previously wet and practice a gentle massage for a few minutes. Rinse hair with water and repeat the operation. It is convenient to use 2 times per week. As maintenance, use once a week. Composition. Piroctonolamina. Extract purified coal tar 0.6 g. Hydrolyzed collagen. 0.2% cationic polymer conditioner. Balanced mixture of anionic, cationic and amphoteric cs Excipient c.s.p. 100 ml.