uka hair oils, nail and body care lines were created by renowned Japanese nail artist Kiho Watanabe, with seven prestigious Tokyo salons. Her uka products are designed with today’s busy modern women in mind, intended to leave them feeling as they would have visited one of her Tokyo spas. uka uses natural and organic ingredients, the uka nail oil range along with the lip&nail balms are certified by ECOCERT and COSMEBIO. uka nail oils are one of the most prestigious in Japan with a ‘cult status’ as an essential skincare product found in the purses of A-listers and celebrities alike.