What Is TPO Gel Polish
TPO stands for trimethylbenzoyl diphenyl phosphine oxide, a photoinitiator used in some UV and LED gel polishes to help the polish harden under light. It is sometimes listed as part of a broader group of photoinitiators in nail products.
Why TPO Gel Polish Is Banned
Regulators have raised concerns about TPO and similar photoinitiators because of potential skin sensitization and irritation. In some regions, authorities have restricted or banned TPO-containing gel polishes to reduce allergy risks and align with stricter cosmetic safety standards.
Impact on Nail Industry and Alternatives
Salons and brands have reformulated products to avoid TPO and other restricted photoinitiators. Many now use alternative curing systems or ingredients that meet updated regulatory requirements. For details on current rules, see the European Commission's cosmetics regulations page at European Commission Cosmetics Legislation.
