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
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