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Why Your Vitamin C Serum Turns Brown

Why Your Vitamin C Serum Turns Brown

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Written by Mad Hippie
There's a bottle somewhere in your medicine cabinet. You bought it a few months ago, maybe a ye...
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Vitamin C (SAP): The Stability Story

Vitamin C (SAP): The Stability Story

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Written by Mad Hippie

Most vitamin C serums use L-Ascorbic Acid, which oxidizes fast and can sting. Sodium Ascorbyl Phosphate is far less prone to oxidation and doesn't need a punishing pH to work — which is what makes it workable for sensitive skin.

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