What is 5-Free?

5-free is a team used to denote nail-enamel that is made WITHOUT using 5 most commonly used harmful chemicals

Toluene Used for smoothness but is a neurotoxin.
DBP: Used to keep nail polish flexible but is hard plastic sitting on nails, depriving them of nutrients and turning them yellow.
Camphor:  Used as a dispersant to increase fluidity and dust repellent but can cause seizures, irritability, and body toxicity
Formaldehyde: Used for nail hardening and as a disinfectant but is intensely irritating, can trigger asthma, and is cancer-causing.
Formaldehyde Resin: Can cause skin irritation breathing difficulties and cancer