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 neutralise any unwanted warmth, making white hair look brighter, buoyant and altogether more vibrant.