| http://www.w3.org/ns/prov#value | - However, actions and effects of them are not necessarily satisfactory.That is, although stabilization was secured, particularly, there was a problem that only salts of these ascorbic acids and derivatives thereof result in poor absorbability.In addition, a method of facilitating permeation of ascorbic acid derivatives into the skin by iontophoresis (ion introducing instrument) designed for permeat
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