iSmile California 2-in-1 PROFESSIONAL TEETH WHITENING KIT includes 1 Teeth Whitening Gel Pen (35% Carbamide peroxide) for Instant Brighter Smile & 1 Charcoal Powder jar for Long Lasting Results. Use our Pen TWICE A DAY to experience up to a 10 Shade Whiter Smile in 10 days! And Protect your New Smile for months with our Organic Coconut Charcoal Powder (use once a day). Professional Strength, Safe & Gentle for daily use with ZERO Sensitivity - Recommended by dentists. MADE IN THE USA. FDA certified.