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 Manicures: The Ugly Truth. To many a nail-polish addict, gel manicures can seem like nail nirvana. The quick-drying lacquers have a chemical component that hardens under a UV light, delivering glossy color that last for weeks without chipping or losing its sheen.