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After 10 years of research, Vichy discovered the power of DERME SOURCE, a layer of dermis that independently oversees the restoration of the entire skin. After studying more than 50 anti-aging molecules, the Vichy Research Center chose ramnosis, an active concentrate of plant origin at a high concentration of 5% for targeted action on Derm Source. Its anti-aging effectiveness has been demonstrated thanks to the testing protocol* inspired by medical research protected by 7 patents.