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vitamin A Acetate for a retinol serum
How effective is vitamin A Acetate for a retinol serum? I attempted to
make one today but the scent of the powder was strong. Is there an
alternative? I also purchased granactive retinoid but it can’t be used
for water based formulas. Thank you. -
3 Replies
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There was a study recently discussed on reddit regarding stability of retinol in commercial products. The results are surprising since most expensive serums are most unstable and less expensive serum is more stable. So you can take a look at antioxidants used for that product (there is a table). Looks like Tocopherol Acetate is not enough, they used ascorbic acid + sodium ascorbyl phosphate + EDTA + BHT + tocopheryl acetate.
Surprisingly Granactive retinoid showed the best stability, so if you use it you can take a look at The Ordinary serum and see what formulation they used.
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Unfortunately, stability is usually against activity for an antioxidant. Since an antioxidant is supposed to preferentialy oxidize instead of what you need to protect, it needs to be just stable enough to remain in your product. Acetates must be converted, and that’s not always the case (not fast enough or at all) when applied on the skin.
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Oh no 🙁 I spent so much time researching and experimenting. Wil have to go back to square one.