Suggestions for good Vitamin C cream

There are a few things that make a Vitamin C worthy of your skin.  The first is pH which is major factor in how well your product absorbs.  Optimal pH is about 2.2.  The next factor is the type of Vitamin C, L-absorbic acid tend to be the best, most active form.  Another factor is the concentration.  Remember that your skin will not absorb any more than about 20% Vitamin C so try to find product that range from about 10-20%, anything more is a waist.  Finally, many products have other ingredients that may boost their effectiveness. After testing about 6 other lines we have found that the SkinCeutical's line, which is tested at the Duke Dermatology lab, is the most consistently clinically effective.  The Phloretin CF has a pH of 2.5 which is excellent for absorption.  It contains 10% L-absorbic acid along with 2% phloretin and 0.5% ferulic acid as added anti-oxidants.  This product will not only defuse any free radicals that are cause by UV light that make it through your sunscreen but will also decrease brown spots by about 20%.  It also helps shrink lines and decreases acne.  Of the SkinCeustical Vitamin C products we have found the patients tend to see results from the Phloretin CF in about two weeks (about two weeks fast than its closed competitor the CE Ferulic).