I have a strange rash in patches on my arms and body which my doctor thinks could be an allergy to lanolin. I have to have patch tests to check this.
Manufacturers extract it from wool using a special process.
It helps to keep human skin smooth and soft, which can be very helpful for dry and cracked skin, especially in conditions such as eczema. It's also used in many household and office products, including furniture polish, leather treatments, paper and printing ink, and shoe polish. Patch testing Patch testing is a very simple way of checking for an allergy to chemicals which come into contact with your skin. It's been used for over a century. You will usually be tested with a range of substances which people are commonly allergic to, as well as anything which seems relevant to your particular story of symptoms.