Magma By Blondor Post Treatment Pure Shine Sealer stabilizes the pigments inside the hair due to a perfectly balanced pH value. It helps ensure the tone and lastingness of the colour results. It also gives intense shine and brilliant colour. When To Use: After colouring with Magma shades- apply this specially developed after-treatment to neutralize oxidation residues and stabilize tone. How To Use: Leave on for a minimum of 5 minutes. The use of other conventional treatments can lead to a reduction of tonal intensity and a shorter lasting ability.