New research found that radiation from nail dryers commonly used in nail salons can damage human DNA, potentially triggering cancer-causing mutations.  The findings contribute to evidence showing that UV light causes "direct cell death and damage to tissue that can lead to skin cancer." The study was published in the Nature Communications journal. Researchers found that a 20-minute session in UV light caused 20-30% of cells to die. Three consecutive 20-minute sessions caused 65-70% of exposed cells to die. The remaining cells experienced mitochondrial and DNA damage, causing mutations that have been linked to skin cancer. There is not yet enough research for experts to opine on whether or how often people should get gel manicures without exposing themselves to skin cancer risks.