Linkage is a protein primer that acts as a molecular bridge between the keratin in the nail and the gel. It contains absolutely no acid or damaging chemicals. You will be amazed at the perfect bond, and how it virtually eliminates lifting when the nails are properly applied.
Proper application of Linkage is to "scrub" the 1st coat into the lightly buffed, dehydrated nail plate. The 2nd coat should leave the nail looking shinny and wet. Per the chemist who makes this amazing product this method of application will give you the best bonding ability of your Linkage.