Question
Posted on: March 6 2013How can I make this preparation? Hydroquinte 5% ascorbic acid 1% Na hyposulphite 2% cetomacrogol Cream AD 100g
Answer
Hydroquinone is a biphenol and PEG derivatives as Cetomacrogol are incompatible with such products. So it is best to replace the CETOMACROGOLCR è me with a Lanette cr è me, Beeler base or water-containing emulsifying ointment PB V.
an additional problem in preparing this CR è me appears to be the formation of a scent, which Hydrogen sulfide smells. This is due to the dissolution of after Hyposulfite or after thiosulfate in acid middle (influence of vitamin C). So we appeal only to ascorbic acid as antioxidants and strengthen the antioxidant effect by adding 0.1% disodium EDTA.
an additional problem in preparing this CR è me appears to be the formation of a scent, which Hydrogen sulfide smells. This is due to the dissolution of after Hyposulfite or after thiosulfate in acid middle (influence of vitamin C). So we appeal only to ascorbic acid as antioxidants and strengthen the antioxidant effect by adding 0.1% disodium EDTA.