“TPO, or trimethylbenzoyl diphenylphosphine oxide, is a key ingredient found in many gel products, especially top coats,” celebrity manicurist Michelle Class explains. TPO is not present in normal, ...
Many Americans are left asking if their manicures are safe after the European Union moved to ban a popular ingredient. TPO's classification as “carcinogenic, mutagenic, or toxic to reproduction" seems ...
The European Union has banned a key ingredient in gel nail polish, raising concerns that products used in salons in the UK and elsewhere may not be safe. From 1 September 2025, Norway, Switzerland, ...
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