Obagi Professional-C Serum 20% – 30ml | High-Strength L-Ascorbic Acid Vitamin C Serum lemon ✔ Lightweight & Non-Sticky Texture:

✔ Lightweight & Non-Sticky Texture: Absorbs quickly without leaving an oily residue

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💖 Ingredient quality: Balanced AHA/BHA exfoliation delivers controlled

hydrating solution that controls shine and strengthens the skin’s protective barrier

Obagi Professional-C Serum 20% – 30ml | High-Strength L-Ascorbic Acid Vitamin C Serum lemon ✔ Lightweight & Non-Sticky Texture:The strongest of Obagi's three Professional C serums 20% L ascorbic acid, for skin already comfortable with vitamin C. 30ml. What it does L ascorbic acid is the form of vitamin C with the most research behind it and the most difficult to formulate: it is unstable, acidic, and loses potency once exposed to air and light. Obagi's Professional C line exists to hold it at high concentration in a stable, low pH base where it stays active. At 20% this is