Hair mist with Cosgard 221. Any suggestions?
Hi everyone. I am starting my journey in formulation I am loving it. Can’t wait to learn and improve.
So I have been working on a simple hair mist… mainly water and two actives (honeyquat and panthenol). pH is 5.5. Preservative is Cosgard 221. At some point I want it to get the product tested. How can I improve the preservative system? I am interested in a shelf life of at least 6 months. Purpose of the product is to refresh and rehydrate the hair while on protective styles.
Thanks in advance
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