Photo-Illustration: The Strategist; Photo: Retailer Last month, the European Union announced a ban on TPO, or trimethylbenzoyl diphenylphosphine oxide, an ingredient commonly found in gel nail polish. The ban went into effect on September 1, prompting lots of chatter online with people wondering if gel polishes were still safe to use. If you’re among them, I’m here to say you’re probably just fine. The studies that led to the ban found that ingesting high amounts of TPO impacted animals’