The ingredients we would pay closest attention to are formaldehyde, toluene, and dibutyl phthalate (DBP) in traditional polish, plus certain acrylates and methacrylates in gel polish. They pose different concerns: some can irritate your skin or airways, while others are associated with risks from repeated exposure. The formula, how you apply it, and how often you use it all matter.
Formaldehyde may appear in some nail hardeners. It can irritate skin and airways and can cause allergic reactions. Formaldehyde resin, which is a different ingredient, can also trigger contact allergies in some people. If your skin reacts around your nails, look for either name on the ingredient label.
Toluene is a solvent that can cause headaches or dizziness when you breathe in enough vapor. DBP is a plasticizer of concern because of its potential effects on reproductive health. Both are less common in many current formulas, but they are still worth looking for if you want to avoid them.
Gel polish introduces a different concern: uncured acrylates and methacrylates can cause skin sensitization. HEMA (2-hydroxyethyl methacrylate) is one ingredient you may see on a gel label. Once you develop an allergy, even small exposures can cause a reaction, so keep uncured gel off your skin and cuticles. If gel touches your skin, remove it before curing, and use the curing lamp recommended for that formula.
For glitter gel, a thin, even application helps the lamp reach the product so it cures as intended. Our guide to Black Diamond glitter gel polish covers application and long-wear tips. If you notice persistent itching, swelling, blisters, or nail lifting, stop using the product and seek advice from a dermatologist.
We recommend painting in a well-ventilated space, closing bottles between coats, and avoiding polish on broken or irritated skin. Choose products by their ingredient labels rather than relying on broad “free-from” claims. Our team also recommends following the product’s curing and removal instructions: peeling off gel can damage your natural nails, while soaking and scraping aggressively can leave them sore.
No. “Non-toxic” does not mean a polish cannot irritate your skin or cause an allergy. Review the ingredients, use the product as directed, and stop if you develop a reaction.
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