OPI GelColor: The label itself should be very well stuck onto the base if you can remove this label easily be wary. Fake bottles seem to be slightly shorter when compared to genuine bottles. Genuine bottles have a finely ribbed base. Many fakes have no ribbed base or the ribbed texture is chunkier (see above photo)

OPI is a leader in nail polish brands. It's more expensive than other brands because of the quality of the polish. I like OPI polishes however, my go to brand of nail polishes is Zoya. You get what you pay for and I believe OPI is one of the best nail polishes that's comapred to China Glaze and Essie.

Looking at the nail polish names when I'm picking out a color. Suzi Weiss-Fischmann agrees—and she should know. As the co-founder of O.P.I., the ubiquitous nail polish brand known for its tongue-in-cheek color names, those nail shades called I'm Sooo Swamped! and Teal the Cows Come Home are all her.

Finding the ideal nail color starts with understanding your undertone. To determine your undertone, observe the veins on your wrist. If your veins appear blue or purple, you likely have a cool undertone. If they have a greenish hue, you probably have a warm undertone.