-
Niacinamide Serum preservation
Hello members! This formula has been formulated by my manufacturer, it also has a few botanical extracts which are not mentioned here. He is saying shelf life is 3 years. Do you think that preservatives are enough in this niacinamide serum? Thanks!
WATER、TREHALOSE、NIACINAMIDE、METHYLPROPANEDIOL、BUTYLENE GLYCOL, SODIUM HYALURONATE、HYDROXYACETOPHENONE、GLYCERIN、1,2-HEXANEDIOL -
3 Replies
-
Prob not - on what data does he claim 3 year stability?
-
What is the pH of product, percentage of HYDROXYACETOPHENONE、GLYCERIN、1,2-HEXANEDIOL, METHYLPROPANEDIOL、BUTYLENE GLYCOL, names of those other extracts and package type?
If pH is ≤5 and these ingredient in high amount and good package that may be enough preservative.
Wait for experts like PhilGeis to give you better comments.
-
That’s a pretty weak preservation system. You would benefit from the addition of a Chelating Agent + Phenoxyethanol.
Log in to reply.