Okay I believe you that there is no smell during development.
Ingredients below for the phenomenal 2-3 week tan in fair. Think the saccharide isomerate might affect the tan smell and development actions somehow? It is supposedly a carbohydrate moisturizer:
From truthinaging.com "Saccharide Isomerate, which is marketed under the trademark name Pentavitin, is a water-binding agent and emollient, according to CosmeticsInfo.org. It is an effective moisturizer containing natural carbohydrates found in the stratum corneum of human skin. It binds to the free amino groups of lysine in the keratin of the stratum corneum, and cannot be washed off easily, leading to long-lasting moisturization (SkinInfo.com)."
Maybe it reacts especially well with the dihydroxyacetone tanning action since both ingredients have to do with sugar and the skin.
Aloe Barbadensis (Aloe Vera) Leaf Water (Aqua, Eau)*, Dihydroxyacetone***, Cocamidopropyl Betaine, Saccharide Isomerate***, Tocopheryl Acetate, Cucumis Sativus (Cucumber) Extract**, Hammamelis Virginiana (Witch Hazel) Extract**, Fucus Vesicolosus (Bladderwrack) Extract**, Papaya (Papaya) Fruit Extract**, Citric Acid, Punica Granatum (Pomegranate) Extract*, Rubus Ideaus (Raspberry) Extract*, Litchi Chinensis (Lychee) Extract**, Glycyrrhiza Glabra (Liquorice) Extract*, Vitis Vinifera (Grape) Extract**, Gingko Biloba Extract*, Sodium Benzoate, Betain, Potassium Sorbate, CI 17200 (Red 33), CI 42090 (Blue 1), CI 19140 (Yellow 5), CI 60730 (Ext. Violet 2), CI 14700 (Red 4)
*Organic / **Natural Origin / ***Ecocert
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