*Original information: OPI Nail Polish boasts about not having the toxic trio (toluene, formaldehyde, and DPB) but, it has other ingredients that aren't the greatest: camphor, which can cause nausea and dizziness if inhaled, and Benzophenone 1, which may negatively affect the endocrine system.

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.

Do you need a lamp for OPI? How do you apply OPI gel polish without UV light? A polish that performs like a gel, the beauty of OPI Infinite Shine is that it doesn't need curing or soaking off, so it can easily be applied and removed at home and in the nail salon without the need for a lamp or acetone.

Like most products, the expiration will depend on when the polish is opened. "The shelf life of an unopened polish can last up to five to eight years, and after opening the polishes last up to two years," Ling Lin says.