Schwarzkopf Igora Royal Absolutes Silverwhite Dove Grey 2.02 Ounce 60 Milliliters A unique demi-permanent formulation with Pro-Age-Complex, the Igora Royal Absolutes SilverWhite Slate Grey tonal refiner contains Siliamine and Collagen. It has a low ammonia content, a low pH, and guarantees tailor-made, low commitment beautifying of silver and white hair. Specially sourced grey pigments provide cool tones to neutralize any unwanted warmth, making white hair look brighter, buoyant, and altogether more vibrant.