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.

Using a cuticle nipper, remove any excess cuticles and with an OPI nail buffer or file, remove the surface shine of the nails. Using the OPI NAS 99 cleanser again, remove any oils and dust left on the nail plate. Apply OPI Repair Mode evenly on the nails and wait for 10 minutes before continuing your manicure.

*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.