Lanolin
/ˈlænəlɪn/
Definition 1 of 1
Pro Tip 1/3Derived from Sheep
Lanolin is a natural product obtained from sheep's wool after they are shorn. 
The new wool sweaters still had a trace of lanolin.
Pro Tip 2/3Emollient Properties
Lanolin is known for its ability to soften and moisturize skin, which is why it's in many skincare products. 
Her chapped lips were relieved after using the lanolin-rich balm.
Pro Tip 3/3Allergic Reactions
Some people are allergic to lanolin and may experience a reaction if they use products containing it. 
He discovered his rash was due to an allergy to lanolin in his lotion.