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Photoderm Self-Tanner takes advantage of a new technology combining the self-tanning agent DHA (Dihydroxyacetone) with a unique diffusion system. The latter allows more DHA to come into contact with the epidermis and thus improves colour quality. Moreover, Photoderm Self-Tanner offers real internal biological protection: Cellular Bioprotection. This exclusive patent preserves and stimulates the skin's defences (immunity) during sun exposure.