vitamin-c-serums
Professional-C Serum 20%
While this serum features a high 20% concentration of L-Ascorbic Acid with excellent skin penetration, it fails to meet the gold standard due to the lack of Vitamin E and Ferulic Acid for stabilization. Additionally, the use of a dropper bottle and the inclusion of fragrance are significant drawbacks for a product at this premium price point.
Sources & References
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