Toluene is a colorless liquid used as a solvent, formaldehyde helps harden nails and dibutyl phthalate is a plasticizer that makes nail polish flexible.

• 甲苯是一种无色液体，用做溶媒；甲醛帮助硬化指甲；而邻苯二甲酸二丁酯是一种增塑剂，增强指甲油的柔韧性。