Gentle yet vibrant gray coverage formulations using only 10 volume for level on level or darker results * A comprehensive palette of 70 colors all capable of lifting and darkening up to 4 levels * 90 gram/3 oz. tubes offer more applications and savings vs competitors * 11 inter-mixable series for endless possibilities * 4 series, specifically designed to cover 100% gray hair, no intermixing needed * 5 concentrates that can be combined with any OYA formula * Versatile lightening cream for controlled lightening or can boost any OYA color one level * Mixing ratio 1:1 (1 part color with 1 part OYA lotion) * High lift series has a mixing ratio of 1:2. It has 4 shades for a neutral one step lift and tone for as dark as a virgin level 6