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most effective form of vitamin C — and the least stable
C20 Original
Get all three — Original
Contact us within 30 days of delivery and we'll refund you in full — no need to return the bottle
C15 CelSignal MAP Serum 3-Pack most effective form of vitaminThree bottles for the price of two. Vitamin C for skin that struggles with L ascorbic acid. Built on 15% magnesium ascorbyl phosphate (MAP) a mild vitamin C that converts in the skin at a comfortable pH 5. 5, with niacinamide and hyaluronic acid. Stock up, keep the extras refrigerated, and never run out of fresh vitamin C. Why fresh matters Traditional L ascorbic acid is powerful, but its low pH and strength can be too much for reactive skin. MAP
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