Joico Lumishine YouthLock Permanent Creme Color 7Nn / 7.00 Natural Natural Medium Blonde - 100% Gray Coverage in 20 RADIANT SHADES. Unlock hairs youth potential with NEW LumiShine YouthLock, Joicos first collagen-infused permanent crme color. Harnessing the fountain of youth-like properties of Collagenknown to keep skin youthfully plump and improve skin elasticity and hydrationthis innovative formula helps revitalize strands and lock in the look and feel of younger-looking hair. With just one color service: Hair springs back with renewed bounce, body, and signature LumiShine shine. Resilience returns. Smoothness and softness are restored. Resistant gray gets our most gleaming and gorgeous coverage.