This is used for clients who have a problem with lifting as an extra insurance of adhesion to acrylic or hard gel. Dehydrates. You wouldn't use this primer alone. It would be applied prior to primer 2.

BB tip: Primer acid can freeze in lower temperatures. please note that if left overnight in a cold working environment without heating in the winter you may need to be careful unscrewing the bottle lid. Put the product in a warmer area for a little while to avoid frozen liquid pulling the bristles from the lid applicator.