Velvalift is a gentle crème developer that contains a special blend of oils and waxes that help the hair absorb colour evenly, condition the hair structure and help protect the scalp from irritation. A stabilised Hydrogen Peroxide that is pH controlled. Velvalift comes in 4 different Volumes/Percentages: 10 vol - 3%, 20 vol - 6%, 30 vol - 9% & 40 vol - 12%. We do not recommend the use of heat for processing any of our colours as this could lead to unpredictable end results. All strengths of Velvalift can be used for general as well as specialist colouring. All strengths can be used on the scalp and give excellent coverage of white, lift and vibrancy." The Velvasilk range can also be used as a Demi:Quasi colour by mixing with Velvalift Demi:Quasi Developer. The colour result will last up to 16-20 washes in the hair. The ratio for mixing is 1 part colour to 1 parts of Velvalift Demi:Quasi. Application should be made to dry hair. When mixed the mixture should be allowed to sit in the bowl for a full 5 minutes prior to application to the hair to allow the mixture to become a non-permanent colour. When using Velvalift Demi:Quasi a blend of coverage can be achieved on hair that is less than 50% white. Velva Pro does not recommend that Velvalift Demi:Quasi is used on more than 50% white hair.