The study by Jung et al. further confirms earlier results demonstrating that dihydroxyacetone in combination with dimethylisosorbide enhances the process of (sun-based) tanning. This earlier study also found that dihydroxyacetone also has an effect on the amino acids and nucleic acids which is bad for the skin. The free radicals are due to the generation of AGE (Advanced Glycation Products) such as amadori products (a type of AGE) as a result of the reaction of DHA with the skin. AGEs are behind the damage to the skin that occurs with high blood sugar in diabetes where similar glycation occurs.
100% Herbal Instant Tan does not use DHA as an ingredient so users don't have to worry about free radical formation. It only uses 100% herbal edible ingredients, without the chemicals of other brands and gives a great tan color as a bronzing lotion. You can use a sunscreen over it if you plan to go into the sun.
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