The active tanning ingredient's) in sunless or airbrush solution is either DHA alone or DHA in combination with Erythrulose. Top quality, effective solutions can be developed with either approach and the use of Erythrulose does not appear to guarantee an edge. The Tanning Store expects, at various times, to carry solutions developed with both philosophies. In the discussion that follows, the case for including Erythrulose is presented.

Erythrulose has been developed to reduce the disadvantages of the previously available self-tanning solutions, namely an irregular and streaky tan as well as a strong drying effect.

Erythrulose is a natural keto-sugar which reacts with amino acids of keratin in the skin. This leads to the DHA-driven formation of brownish polymers.

In one study, volunteers treated with a DHA/Erythrulose solution were compared to others treated with the DHA solution alone. Erythrulose in combination with DHA produced a more even and longer lasting tan without the undesired streaks. The skin treated with the combination solution was 30% less dry than those treated with DHA alone. The maximal tanning intensity was reached with the Erythrulose after 4-6 days and with DHA after 2 days. Due to this slower reaction and to its more uniform distribution in the outer skin, Erythrulose is believed to to be responsible for a more uniform, even, and longer lasting tan.

In summary, Erythrulose in combination with DHA may produce a deep, uniform and natural skin tan without undesired streaks. Thanks to its retardation effect, Erythrulose prolongs the tan and leaves the skin less dry.

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