100% pure lanolin, easily determined by color and feel… its dark yellow color and stickiness indicate that it is close to its natural state and therefore very potent! Safe to be used during pregnancy to help moisturize nipple in preparation for breastfeeding. Purelan is also used to heal and protect sore and/or wounded/cracked/bleeding nipples. Safe for ingestion, it does not have to be wiped off before feeding or expressing milk. It can also be used for chapped lips, dry elbows, and cracked heels.