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Antioxidant Layering: Why Vitamin C Alone Isn't the Whole Defense

Rather than applying a single-form vitamin C serum and then layering a separate vitamin E product on top, a formula that already combines multiple forms of vitamin C with vitamin E delivers much of this antioxidant network in one step. That's a meaningful difference from a basic single-ingredient vitamin C serum, even if both products are labeled "vitamin C serum" on the front of the bottle.

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