What you are purchasing here are tamper seal shrink bands that work best for lip balm tubes.Directions: Place shrink band around the lid of the bottle that you will be shrinking it to.Apply heat with the use of a heat gun or heat tunnel.I don't recommend using a blow dryer; it's possible but not worth it unless you're only doing a small quantity of bottles.The shrink bands are easy to heat and durable.Have any questions at all about the shrink bands.Just send me a message and I'll get back to you as soon as I can!