This is a waterproof acrylic glue that will give you a good hold for 1-3 weeks. It is also great for lift touch ups and can be carried for emergency circumstances. You are able to shower after application and will hold up to sports or any water activity. Good for Poly Sides and Lace Front. Believe it or not, some of our customers use this in place of Ultra Hold for full glue bonding. Takes a bit longer to apply, but easier to clean stays out of hair and hold pretty good full bond for a week or two. Need to buy a few bottles though.