Ultra Hold is the most popular liquid Lace Wig Adhesive. It is made from a waterproof, "non-yellowing" formula and comes in a dark-colored 3.4 oz glass bottle with a brush-on applicator.This adhesive is water resistant-which will allow you to swim and exercise without concerns of slippage.Description: Waterproof. For professional use only. Flammable. Close cap tightly. Do not breathe fumes. Store below 90 degree F.Ingredients: Acrylic Adhesive, Isopropanol, Ethyl Acetate, Heptane, Toluene.Average hold of 4-6 weeks.Use C-22 Citrus Remover and Lace Release to dissolve.Avoid breathing fumes. 3.4 oz. bottle.