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.
Geer explains that Gel polishes are similar to nail polish - you have a base coat, polish color and top coat. Both types of nails undergo chemical process to bond to the natural nail, however, there are some differences between the two.