Loreal Dia Richesse Hi-Visibility Professional Hair Color.43 Brown Siena 1.7 Ounce 50 Milliliters Brings ultra-visible highlights and intense shine, for natural or colored hair. Fades gradually, so no root effect. Helps to protect the hair fiber, leaving it feeling soft. Coverage of up to 50% of white hair and lasts up to 6 weeks. The mixing ratio of 1:1.5 Color to Developer. Use 9-15-volume DIActivateur Developer. Offers up to 1.5 levels of lift. *This is a professional product and should be used only by a trained individual. The seller is not liable for any adverse outcome resulting from the use of this product.