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Why does Skinceuticals CE Ferulic cost $100 more than CSS
How Skinceuticals CE Ferulic (which we reviewed last year) justifies the $100 difference is unclear. Perhaps it is by listing the concentrations of the three actives: vitamin C at 15%, vitamin E at 1% and ferulic acid at 0.5%. Well no actually, Cosmetic Skin Solutions makes exactly the same claims on its bottle.
Ferulic acid, by the way, is a great ingredient. It has been found to act synergistically with other antioxidants and, specifically, renders vitamins C and E more powerful. A Duke University study found it particularly good for preventing sun damage, and studies elsewhere have demonstrated that exposure to ultraviolet light actually increases the antioxidant power of ferulic acid.
Good at any price perhaps, but I know which one I’d buy. And, since I know you are dying to ask, Marsha is very pleased with the results of Cosmetic Skin Solutions.
For more product twins, check out this article.
Ingredients in Skinceuticals
Water, Ethoxydiglycol, 15% L-Ascorbic Acid, Propylene Glycol, Glycerin, Laureth-23, 1% Alpha Tocopherol, Phenoxyethanol, Triethanolamine, 0.5% Ferulic Acid, Panthenol, Sodium Hyaluronate
Ingredients in CSS
Water, Ethoxydiglycol, L-Asorbic Acid, Propylene Glycol, Glycerin, Laureth-23, Alpha Tocopherol, Phenoxyethanol, Triethanolamine, Ferulic Acid, Panthenol, Sodium Hyaluronate.