A new study suggests high doses of the UV light used to dry nail polish can cause DNA damage, a possible precursor to cancer.
An American study revealed moderate damage to human and mouse cells after long sessions of UV light from a nail lamp.The study found modest levels of oxidative stress in the cells, a mechanism that can damage DNA.The Australian Radiation Protection and Nuclear Safety Agency tested at-home nail dryers, finding the most powerful devices would need to be used for almost 40 minutes before posing a risk.
Australia’s radiation safety regulator said the devices posed a low risk if only used for a short time. However, it conceded the effects of long-term, repeated exposure were unknown. Ultraviolet nail lamps are used in salons and at home to cure and dry gel nail polish. The UV light hardens the gel.Two types of UV radiation, known as UVA and UVB, are known to contribute to skin cancer – with UVB considered by far the bigger threat.
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