HAIR TOUCH UP root concealer mahog brown 75 ml HAIR TOUCH UP root concealer #mahog brown 75 ml is a great product for those who want to touch up their root color without having to dye their entire head of hair. It is a water-resistant, smudge-proof and heat resistant formula that can last up to three days. It is easy to apply with the included brush and comes in a variety of shades to match any hair color. It is also free of sulfates, parabens and synthetic dyes, so it is safe for all hair types.