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2 hours ago
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Why Your Vitamin C Serum Turns Brown
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There's a bottle somewhere in your medicine cabinet. You bought it a few months ago, maybe a ye...
Vitamin C (SAP): The Stability Story
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Most vitamin C serums use L-Ascorbic Acid, which oxidizes fast and can irritate. SAP is different — stable, effective, and 0% irritation in an independent 8-week clinical study. Here's why it matters.
