Hair care Dyes Wella Professionals Koleston Perfect 8/43 60ml 6/73 Rubio Oscuro Koleston Perfect, the professional hair product that sets the standard for expertise and creativity in hair color. Trusted daily in over 100,000 salons worldwide to deliver predictable color results and supreme hair care thanks to our highest quality ingredients. Contains up to 25% conditioning agents and lipids for care and gentle-on-hair results. Endorsed by the Institute of Trichologists, the most important professional association for trichologists in the world and Winner of the SalonStar award in the color category for the 5th time in a row. Koleston Perfect Crème Developer is revered by hairdressers worldwide for its thick, creamy consistency, improved mixability and state-of-the-art performance, Koleston Perfect Crème Developer allows precise, even development of color.