Great antioxidant serum
The form of vitamin C used in this serum, tetrahexyldecyl ascorbate is the superior form for antioxidant protection and skin absorption. It remains stable far longer and doesn't oxidize. The addition of red tea, which has a higher antioxidant score than green tea further enhances this serum. I had used l ascorbic acid for years, and while it produced "a glow," that glow was just irritation and slight exfoliation. Tetrahexyldecyl ascorbate is lipid rich and feels great on the skin while penetrating better. This is a great serum and I've been using it for a few years.
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