OBAGI Professional-C Serum 20% - contains 20% pure L-ascorbic acid — the most effective form of Vitamin C, which helps brighten the skin, improve its elasticity, and reduce signs of premature aging.

Key benefits:

• 20% pure Vitamin C (L-ascorbic acid): Potent action against fine lines, pigmentation, and dull skin.

• Intense antioxidant: Protects the skin from free radicals and environmental pollution.

• Fast-absorbing: Lightweight, non-comedogenic texture that leaves no sticky residue.

• Improves tone and texture: Makes skin brighter, smoother, and more radiant.