Topical sunless tanning products are generally considered safe alternatives to sunbathing, as long as they're used as directed. The Food and Drug Administration (FDA) has approved DHA for external application to the skin.

Are tanning sprays bad for you?

The ingredients in most spray tan formulas are FDA-approved and do not have any known adverse side effects. When used appropriately, the DHA in a spray tan solution is considered safe. ... The FDA advises that you avoid inhaling DHA and cover areas around your eyes or lips when spray tanning.

Why tanning spray is bad?

Some physicians and researchers have expressed concern that repeated exposure to spray tans may cause health problems due to inhalation of DHA. Specific concerns have included the risk of asthma, COPD, and lung cancer.