L'Oreal Paris Men Expert Easy Apply Permanent Haircolor, Jet Black 01, 1 Kit L'Oreal Paris Men Expert Easy Apply Permanent Haircolor, Jet Black 01, 1 Kit L'Oreal Men Expert One Twist Hair Color will cover your grays in just 5 minutes. The product provides undetectable gray coverage that fades naturally in 6 weeks. Just twist, shake, and apply! The results speak for themselves: 97% of men claimed satisfaction and 9/10 men would recommend to a friend. This hair color provides a natural looking result. It blends your grays with your original color delivering undetectable gray coverage. It works on all levels of grays and all hair types and textures.