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Alfred MARCHAL, PhD in organic chemistry, is an internationally recognized antioxidants and aesthetic medicine expert. He has a 35-year academic experience in R&D for pharmaceutical organic synthesis and phytopharmaceuticals. Author of many scientific articles and patents in particular for vitamin C, vitamin K and hyaluronic acid. He runs ALPHASCIENCE Research Department and is board member in pharmaceutical companies. The four steps of wound healing process Many...

A breakthrough antioxidant Where does tannic acid come from?  Tannic acid is a polyphenol from the tannin family. It is present in many plants, including oak bark, yew or Tynanthus panurensis. It is found in all parts of the plant, seeds, gall, cones and wood. Tannic acid is present in high concentrations in the bark and wood of Sequoia to protect it from diseases,...

ORIGINS AND WAYS OF TREATMENT Atmospheric pollution : a danger for the health of your skin. The synergistic action of environmental pro-oxidants amplifies skin ageing. Our skin is the major interface between our body and the external environment. It acts as a biological barrier against a range of chemicals and physical environmental pollutants. It is defined as our first defense against the environment due...