WHY ALL VITAMIN C IS NOT THE SAME

With many vitamin C products on the market today, it is important to choose a topical antioxidant serum with an effective formulation.  When it comes to scientific proof behind skincare, SkinCeuticals sets the standard with published, peer-reviewed science supporting the efficacy of our topical antioxidant serums.

Studies at Duke University show that an effective topical vitamin C possess the follwing characteristics

IT MUST CONTAIN PURE L-ASCORBIC ACID

Derivatives of vitamin C such as ascorbyl palmitate and magnesium ascorbyl phosphate are not absorbed by the skin or converted into vitamin C in high enough concentrations to have a significant effect.

IT MUST CONTAIN HIGH CONCENTRATIONS OF L-ASCORBIC ACID FOR MAXIMUM EFFICACY.

A topical vitamin C serum must contain a substantial amount of L-ascorbic acid while remaining stable to be effective.  When formulated properly, a 20 percent concentration provides the maximum amount of vitamin C readily absorbed by the skin.

IT MUST BE AT ACID pH.

Vitamin C must be formulated at an acid pH below 3.5 to effectively be absorbed by the skin.  As pH increases, absorption rate decreases.

THE SKINCEUTICALS DIFFERENCE

• Formulated with pure L-ascorbic acid at high concentrations and a low pH
• Neutralizes free radicals from the entire UV spectrum and other environmental sources
• Prevents the formation of thymine dimers - sun-induced dna mutations associated with skin cancer
• Stimulates collagen synthesis to help diminish the appearance of environmental damage
• Only one application needed daily - once absorbed, will not wash or rub off

SkinCeuticals C Serums

• Phloretin CF
• CE Feurlic
• C+AHA
• Serum 20
• Serum 15
• Serum 10
• Eye Gel