Obagi Professional – C Serum 10% provides antioxidant protection with deep penetration to the dermal layer. The 10% L-ascorbic acid helps contribute to collagen synthesis. Obagi Professional-C Serum 10% is suitable for dry, sensitive or reactive skin.

Obagi Professional – C Serum 15% provides superior antioxidant protection with deep penetration. Obagi Professional-C Serum 15% is suitable for all skin types.

Obagi Professional – C Serum 20% provides superior antioxidant protection with deep penetration. Obagi Professional-C Serum 20% is suitable for all skin types.

Obagi Professional – C Serum 5% provides antioxidant protection to the delicate eye area. The 5% L-ascorbic acid helps contribute to collagen synthesis.