YOU LEE Chem CO Ltd is established in Taiwan since 1982. We are the leading company developement and manufacturing for permanent hair dye and semi-perm hair . Our permanent hair dye does contain ammonium but without any ammonium odor due to special emulsion techology , which can further provide gloss, soft and color fastness with low damaged on hair. We can match any color according to customer needs by advance color analysis equipment. Because of our unique strength and low cost with stable quality, we sell our products to top critical professional market in Taiwan and oversea.