"Another sodium salt of sulphurous acid. Used as an antimicrobial preservative, antioxidant and bleaching agent in food. overexposure may cause an allergic reaction. May cause hypersensitivity reactions in sensitive individuals, especially asthmatics. Other names--pyrosulphurous acid, disodium salt. Molecular formula--Na2S2O5."
oh, and i was planning to use it on my face together with the lemon juice treatment thingie.
thanks



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