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" ... Phillip Levy: Firstly, it is important to remember that ageing of the skin is a result of a multitude of factors but most importantly from the decreasing activity and quality of the skin’s Stem Cells (the indispensable genitor not only of all of the skin cells and but ultimately of all the collagen & elastin in our skin) leading to the loss of a youthful appearance as well as wrinkling and sagging. ... "