PuroBio blondor Powder is the best product to Seal & Care. Blondor is high-shine conditioner to treat hair after use. Its Anti-Yellow Molecules for clear blonde results. Multi-purpose applicability with up to 7 levels of lift. It is also highly recommended hair color care for usage after all other Blondor products. One more thing, it is not a color, it is blonder which is used to bleach hair.so if u use it ur hair will show blonde depending on the amount of uses. How to use? Mix blondor Bleaching Powder and Developer 12% in a ratio of 1:2 thoroughly, blended as cream and Apply Blondor Blonde Seal & Care evenly to damp hair. Leave on for a minimum 30 to 45 minutes. Rinse thoroughly. When the desired shade has been reached, rinse thoroughly well with water and shampoo.