A range of concentrated serums and skin care treatments to deliver vital nutrients to the skin, improve texture and smoothness and address specific skin concerns, including ageing and sagging skin, fine lines and wrinkles, sun-damage, dark circles, redness and irritation or problematic skin.  Serums are rich in nutrients that are good for skin. Most are water-based, so your skin absorbs them quickly. “They are the workhorses of most skin care regimens, in that they deliver the most powerful results,” says New York dermatologist Whitney Bowe, MD.