WATERPROOF SUGGESTION:Some customers mentioned that after sweating, the effect of the glue will be much worse. This glue is designed by us after many experiments, and it will not be waterproof when used correctly. Let's say, use a hair dryer to assist the glue to dry completely, and it will take up to 4 applications of the glue. This increases its sturdiness. We will communicate with many customers about the use effect, it is very important to follow the usage methods we give. ABOUT RESIDUE:Many customer have mentioned that glue leaves a residue on the skin, and normally, if you use the correct glue remover, there will be no residue. Leaves your skin clean and shiny. Don't worry if you use an inappropriate glue remover, you can spray some alcohol and wipe it off. IMPORTANT NOTICE: If you are curious about the smell of the glue you just received, you might as well unscrew the cap and smell it, but remember to keep the cap tightly closed. If you only need to use a portion at a time, make sure to tighten the cap to save the rest. The important thing is said three times: don't want your money to go to God in vain, screw the bottle cap, screw the bottle cap, screw the bottle cap. WARM TIPS:When you receive the glue, please pay attention to whether the bottle cap is screwed well, if there is air leakage, please contact us in time. Because the glue will produce a chemical reaction when it comes into contact with the air, making it solidify, thus affecting your normal use. We will help you solve the problem as soon as possible, such as replacing a new product or arranging a return. SWEET SHARE:This is literally The best we care glue I have ever bought, for such a cheap price. This hair glue literally stayed on my head for six days straight with no movement, even with me tugging the wig on my hair to see if it will come off as a test. IT DID NOT MOVE AT ALL!!!!! To be honest when I ordered the glue I wasn't expecting it to hold up to my oily skin. Boy was I wrong!!!Thus lakefront glue is everything. I will definitely repurchase this glue and recommended to anyone to try.