• Obagi Professional-C Serum provides antioxidant protection with deep penetration to the dermal layer. The 10% L-ascorbic acid helps in defending against damaging UVA and UVB rays, helps prevent premature signs of aging such as fine lines and wrinkles, and contributes to collagen synthesis. Obagi Professional-C Serum 10% is suitable for dry, sensitive and reactive skin.
• Obagi Professional-C 10% Serum uses stabilized ascorbic acid -- the only form of Vitamin C that can be effectively absorbed by the skin. This serum is designed to deliver greater penetration of professional strength Vitamin C to the dermis and epidermis. Obagi Professional-C 10% Serum is clinically proven to provide up to two times more penetration than leading formulations and to remain stable for longer periods of time than other Vitamin C treatments. Obagi Professional-C 10% Serum actually goes to where collagen synthesis occurs, delivering optimal skincare results.

Benefits

• Fast acting - Obagi Professional-C Serums are absorbed into your skin quickly, so your skin benefits right away. Because they are rapidly absorbed, - Obagi Professional-C Serums won't rub or wash off.
• Greater stability - Obagi Professional-C Serums are proven to remain stable for longer periods of time than leading Vitamin C treatments, which can break down and lose potency more quickly.
• Deeper penetration - Obagi Professional-C Serums deliver greater penetration to the epidermis and dermis. The greater the penetration the great the antioxidant benefits.
• Easy to use - simply apply a few drops to your face, neck, chest, or around your eyes in the morning, or as directed by your physician or skin care professional.

Precaution: Topical Solution - for external use only.  Avoid direct contact with the eyes or mucous membranes.  Store in a dark, cool place.  Keep cap on tightly when not in use.  Do not shake.

*Details provided by Obagi