✨ Instant Confidence in a Can! ✨ Achieve fuller-looking hair instantly. Ideal for quick touch-ups between salon visits. Conceals grays in seconds for a flawless look. Enjoy a comfortable application with no residue. Works on natural and synthetic hair alike. Lasts until next shampoo Ammonia-free formula Instant thickening effect L'Oreal Paris Root Cover Up Temporary Gray Concealer Spray is a lightweight, ammonia-free hair color spray designed to instantly conceal gray roots and enhance hair thickness. Perfect for quick touch-ups, it provides seamless coverage without smudging, making it suitable for all hair types, including synthetic hair.