As early as 1851, the New York pharmacy developed formulas for skin and hair care that contained particularly effective, natural ingredients.The original Kiehl's Apothecary was a family business whose historically furnished shop is located in New York City at 109 Third Avenue in the East Village. Still at Kiehl's, active ingredients are not selected for their aesthetic properties. Only formulas and ingredients whose effect on the skin is clearly positive are processed.Kiehl's uses a minimum of preservatives in its products, just enough to make them shelf stable. Kiehl's uses many naturally derived substances. But only the most compatible and effective formulas are incorporated into the products to achieve the best results and maximum benefits.The basis for the formulations is always the needs of sensitive skin.