According to nail artist Ami Streets, a piece of the puzzle is the fact that gel polish also has a “more complex formulation and ingredient list” compared to traditional nail polish. “In addition, using a UV lamp in the application process can trigger those with sensitivities,” Streets adds. “However, I also believe due to the amount of DIY kits now available for purchase without completing brand specific training, that improper application, mixing brands, and lamp curing compatibility all play a huge factor in the increased risk of adverse reactions. For the best and safest results use same brand products and their specific brand lamp, or see a qualified and insured nail tech for your treatment.”