The substance, TPO, is still permitted in the United States. The European Union has banned a key ingredient found in many gel nail polishes, effective Monday, Sept. 1. The ingredient, trimethylbenzoyl ...
Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? A common ingredient found in many gel nail polishes was just banned by the ...
“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, ...
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