It acts as a double-sided adhesive that attaches the nail to the nail polish and the nail polish to the nail. The bottle is shielded by an elegant paint to protect the product from the sun's rays.
How to use
Apply to clean nails before laying polish, air dry in one minute.
Pro and cons
PROS very useful for making the nail polishl last longer, dehydrates the nail, degreases it and allows better color adhesion. It does not damage the nails, it does not contain acids. CONS none