Genocuta n biosulfur shampoo has a 2% conten of biosulfur, which makes of it an ideal treatment for excessively oily hair. together with biolsulfur, melaleuca alternifolio and hydrolized keratin help control oil and remove the excess of secretions. biosulfur shampoo also leaves clean manageable hair with a healthy shine.use: genocuta n biosulfur shampoo is recommended for everyday use massage into wet hair,rinse and repeat if required.