Since dihydroxyacetone (aka DHA, the main ingredient in chemical self tanner) hasn't been in the mainstream market long enough, we don't know whether it gets absorbed into the bloodstream. However, there are some indications that DHA may be a cause of DNA damage. Because of this, it is best to avoid any self-tanning products, including spray tanner (which is easily inhaled), until more research can be done.
Self Tanner or Spray Tanning
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