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).
Shellac is the most expensive of the gel nail polishes on the market, and the bottles are half the size of the competition. The higher cost for the salon owner is one reason Truong believes other salons might not correct you if you ask for Shellac but choose a different gel polish when picking your color.
Gathering Manicure Supplies. Gel nail polish requires more steps than enamel nail polish, thus the process requires more supplies. Users need three nail polish products: gel base coat, gel color polish, and gel nail top coat. For cleaning the nails, users need gel nail cleanser and alcohol wipes.