WHAT MAKES IT SO EFFECTIVE?
Ascorbyl Sodium Phosphate is a more stable form of vitamin C, registered as a quasi-drug in Japan. Recognized as an antioxidant, it illuminates the complexion and reduces the signs of age. Radiance Booster contains also pure L-ascorbic acid – the most active, yet least stable form of vitamin C – together with an ascorbic acid salt form, which greatly contributes to better stability in the very high concentration.
STAY-C® 50 is a registered brand of DSM Nutritional Products AG (DSM Nutritional Products SA /DSM Nutritional Products Ltd), Switzerland. Stated in vivo studies carried out by DSM with a panel of 40 volunteers aged 35-45 years old.

HOW TO USE
Radiance Booster can be applied am and/or pm as needed, mixed in the palm of the hand with a serum to maximize results, or directly in your usual cream for a boost.
During the first week, we advise limiting the use to the pm, so as to allow skin to better adapt. 2-3 drops are enough, more can be used if needed.
The use of an adapted UV protection during the day is imperative to better protect the skin (and the vitamin C in the formula!).