"UVA rays penetrate the skin to a deeper depth than UVB rays and as a result are responsible for many of the changes in the skin known as photoaging," she says. "We do know that repeated exposure to UVA from sunlight or tanning machines is mutagenic and can cause skin cancer, the question remains as to how much of a risk typical gel manicures pose 2 ," she adds-which means we need more studies to confirm the risk.īut, we do know that UVA rays contribute to photoaging. There's much variability with respect to types of lamps, exposure times, positioning of skin, skin types, etc. "At this point in time, it is difficult to quantify the risks of UVA exposure during repeated gel manicure sessions," Stern says. Recent research found that radiation emitted by UV-nail polish dryers can alter and damage DNA 2 -however, it's not clear if this is associated with skin cancers or other health risks.
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