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.
7 On Your Side consumer reporter Kimberly Suiters asked two women to try salon gel polish on the right hand and store gel polish on the left to see which would last longer. The potential for a cost savings is high. Salons charge anywhere from $35 to $45 dollars for a gel nail polish manicure; stores are selling âgelâ polish for less than $10. âI am curious to see how it turns out,â said Inga Middleton, one of the testers.