A phytin aqueous solution including at least one alpha-hydroxylated carboxylic acid and phytin in a solubilized form, preferably in a concentration ranging from 70 g/L to 270 g/L, and in that it has a pH value ranging from 3 to 5. The phytin aqueous solution may be used in the preparation of a liquid nutritional supplement and in the preparation of a cosmetic composition.
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