Medela developed Purelan to give you the fast, effective relief you need. The pure, natural formula means there is no need to take it off before breastfeeding.Purelan is designed to help your breastfeeding journey, relieving pain and protecting your skin because nothing should stop you from giving give your baby the best start in life. Use Purelan every time you breastfeed to hydrate and protect your nipples. Lanolin is a deeply hydrating natural substance found in sheep's wool. This powerful ingredient is soothing thanks to its emollient and moisturizing properties. Here is Purelan ™ Purelan has just one ingredient, 100% natural lanolin, a cream formulated to relieve sore nipples and dry skin. Made with ultra pure, medical grade lanolin, Purelan is highly effective and safe for nursing moms and their babies - no need to take it off before breastfeeding. Purelan is dermatologically tested, hypoallergenic and suitable for sensitive skin. Features : -Developed to quickly and effectively relieve sore nipples and dry skin -Safe for babies and does not need to be removed before breastfeeding -Creates a protective barrier on the upper layer of the epidermis and rehydrates it from the inside -Without additives, preservatives or perfume -Hypoallergenic and suitable for sensitive skin -The deeply moisturizing effect of lanolin is also great for chapped lips and dry skin - suitable for adults and children -Rich texture soothes nipple pain, protects the skin surface and rehydrates it from the inside out -Natural - a single ingredient lanolin that hydrates and protects