Yubi Blonde Violet Perfector Shampoo by Shu Uemura. Yubi Blonde Perfecting Violet Shampoo provides a deep cleanse and neutralizes unwanted tones for long-lasting blonde. Enriched with exclusive Japanese technology Cold Pigment at Shu Uemura, brassy and yellow tones are counteracted. The violet perfecting shampoo contains Japanese white peony, a symbol of purity in Japan, which conditions the hair fiber with a smooth and natural finish. The formula combines violet dyes with cold pigment technology developed in collaboration with a Japanese leader in ink production exclusively for the brands Shu Uemura. The white peony is carefully harvested in the Niigata mountains, dove where pure melting water and low summer temperatures provide the ideal climate for the purest and double-blooming white flower. Shu Uemura has dedicated more than 15 years to the care and selection of these flowers, ensuring a mindful collection to take care of this precious resource. For this reason, only half of the flowers are hand-picked from May to June.