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Creating a buffer to a shampoo formulation at pH 5.5
My shampoo formulation is as follows:
Deionized Water 55.35 Decyl Glucoside 10 Cocamidopropyl Betaine 15 Crodasinic LS30 8 Crothix 0.25 EuroNac AMF Ultra 8 Crodazoquat 2 Coconut oil 1 Fragrance 0.2 Preservative 0.2 And I would like my shampoo to maintain a stable pH of 5.5. If 2% citric acid can give me a pH 5.5, what corresponding amount of sodium citrate should I put in the formulation to create a buffer effect.
Also, I am not really satisfied with the foaming. What can I change to improve foaming? Any other general comments about the formulation are welcome.
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