PRIMER – based on methacrylic acid, which gives molecules two branches. One branch is strongly attracted to the nail plate, the other reacts chemically and becomes part of the artificial product. This mechanism anchors the technical product to the nail plate and prevents it from lifting off. It has a corrosive effect on the skin and can cause moderate burns in case of accidental exposure. It is applied moderately, not reaching the cuticle by 0.5 mm. Allow to air dry for 60-120 seconds and do not rush the procedure. Contraindicated for pregnant women and pregnant women.