I am still confused as to why these nail enamels are called "Sephora by OPI." These are the same formula. There are a lot of lovely shades. They wear well and resist chipping (although not as well as "Seche" colors). On Sephora there is a virtual "try-on" tool where you adjust a hand picture...
by GigiSD | 1103 reviews
10.0
THERE IS NO DIFFERENCE.
The OPI Sephora and OPI regular are the same formula in my opinion. I have tried both, and they are awesome. The OPI Sephora polishes don't fade or chip and Sephora has a great variety of colors.
If you're an OPI fan, these are basically the same thing. There are a few exclusive colors sold at Sephora as opposed to elsewhere. Unfortunately this along with high demand causes Sephora to sell these at a higher price, even though it's the same formula.