Clinical trial conducted on 22 individuals - -2014
Duolys CE was tested by 22 women aged between 30 and 70 years, who observed that:
- Their skin was more radiant and unified: 100%
- Their skin was firmer: 100%
- Anti-wrinkle effect: 96%
- Smooth and moisturised skin: 100%
- Wrinkles and lines attenuated: 96%
% satisfaction
Vitamin C bibliography
Jens Lykkesfeldt, Steffen Loft, Jesper B Nielsen, and Henrik E Poulsen
Ascorbic acid and dehydroascorbic acid as biomarkers of oxidative stress caused by smoking
Am J Clin Nutr 1997;65/959-63 – 1997 American Society for Clinical Nutrition
Betty V. Nusgens,
Topically Applied Vitamin C Enhances the mRNA Level of Collagens I and III, Their Processing Enzymes and Tissue Inhibitor of Matrix Metalloproteinase 1 in Human Dermis
0022-202X/01/$15.00 – 2001 The Society for Investigative Dermatology, Inc.
Jing-Yi Lin, MD, M. Angelica Selim, MD, Christopher R. Shea, MD, James M. Grichnik, MD, PhD, Mostafa M. Omar, PhD, Nancy A. Monteiro-Riviere, PhD, and Sheldon R. Pinnell, MD
UV Photoprotection by combination topical antioxidants vitamin C and vitamin E
J Am Acad Dermatol 2003; 48:866-74
Maria Ponec, Arij Weerheim, Johanna Kempenaar, Aat Mulder, Geert S. Gooris, Joke Bouwstra, and A. Mieke Mommaas
The Formation of Competent Barrier Lipids in Reconstructed Human Epidermis Requires the Presence of Vitamin C
0022-202X/97/$10.50 – The Society of Investigative Dermatology, Inc.
Maurizio Podda, Maret G. Traber, Christine Weber, Liang-Jun Yan, and Lester Packer
UV-Irradation depletes antioxidants and causes oxidative damage in a model of human skin
PII S0891-5849(97)00142-1 / Free Radical Biology & Medicine, Vol. 24, No. 1 pp. 55-65, 1998
Karen E. Burke, Interaction of vitamins C and E as better cosmeceuticals
Dermatologic Therapy, Vol. 20, 2007, 314-321
