Need To Look Fabulous Fast? L'Oreal Paris' Root Cover Up Is Our Quickest Way To Cover Gray. In Just 3 Seconds Gray Roots Are Concealed With Our Light-Weight Quick Dry Formula- Leaving No Smudging Or Sticky Residue When Dry. One Application Will Last Until Your Next Shampoo Plus It'S Ammonia-Free Peroxide-Free And Contains No Synthetic Dyes.