ive had a bottle of ketoconazole(spelling) shampoo for over a year now. i bought it specifically for my lips because i read somewhere to put the suds on my lips, its used for dandruff of the scalp and beard. i get the white dandruff in my beard alot and the shampoo takes it away really well. too be honest i didnt use it much though, maybe only 5 times in the last year.