The distance of migration is inversely correlated with the molecular weight of the protein (small proteins move faster through the gel than large proteins do and therefore migrate further down the gel).
Gel nail polish is, hands down, the most popular service at nail salons right now. But many women may not be getting what they think they're getting. CND's Shellac is a brand of gel nail polish. It was the first to hit nail salons, offering a no-chip, super-shiny nail color lasting up to two weeks.
Gel nail polish goes on like regular enamel nail polish but hardens and looks like an acrylic manicure. The process is simple enough for people to perform at home and cut out the time and cost of visiting a salon every few weeks.