Obagi Professional-C 20% Serum

Obagi Professional-C Serum 20% is a concentrated Vitamin C serum that delivers a youthful, radiant complexion.
The earlier you add a vitamin C serum to your routine, the longer your complexion will remain youthful and radiant. Obagi Professional-C Serum 20 is a concentrated serum with 20% vitamin C that provides multiple benefits for the complexion. This ingredient neutralizes free radicals that break down collagen and elastin causing damage and leading to fine lines, wrinkles and dark spots. Vitamin C also promotes collagen production which plumps skin and reduces the look of wrinkles. The formula is ideal for normal, combination and oily skin types, and it absorbs quickly without leaving the complexion greasy or oily.
Key Features: 
20% L-ascorbic acid promotes an even tone and texture
Advanced form of vitamin C absorbs five times more easily than other serums
Neutralizes free radicals before they can cause damage to the complexion
Apply five to seven drops of Obagi Professional-C Serum to the face, neck and chest using fingertips. Use on cleansed skin in the morning before sunscreen and makeup application. A slight tingling may occur in some people, which diminishes with use.