Nerdwax Stop Slipping Glasses as Seen on Shark Tank Easy to apply & clean - simply wipe any surface oils off your glasses and apply directly to glasses Apply when needed - lasts 1 hour to all day depending on how much you apply Great for your skin - made of a unique blend of cosmetic grade 100% all-natural ingredients Lasts 6-8 months - a single tube of Nerdwax is estimated to last 6 to 8 months 100% All Natural Cosmetic Grade Ingredients Can be applied to any style of glasses Just onetube of nerdwax will last up to 6-8 months of daily use Made in the USA