PRIMER FREE ACID 12ml Extremely delicate, acid-free primer works on the principle of double-sided adhesive tape effectively increasing the adhesion of gel, acrylic and hybrid varnish. It is recommended for people with sensitive and prone to allergies. No Acid Primer leaves a sticky layer on the nail, provides maximum safety, guarantees durability styling, eliminates the risk of lifting and ensures that the nail plate is properly prepared for nail sets.