Lanolin is a wax secreted by the sebaceous glands of wool-bearing animals, such as sheep. It is also known as wool fat, wool yolk, wool wax, or wool grease. Here are some key facts about lanolin:
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Composition: Lanolin primarily consists of sterol esters, which are different from glycerides found in true fats. A typical high-purity grade of lanolin is composed predominantly of long chain waxy esters.
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Uses: Lanolin is used in the protection, treatment, and beautification of human skin. It is classified as an occlusive moisturizer, which means it works by reducing water loss from the skin. Lanolin is also used topically to treat sore, cracked nipples during breastfeeding.
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Benefits: Lanolin is a deeply moisturizing oil that naturally occurs in sheeps wool. It mimics the skin's natural oils to deliver intense hydration where it is needed the most. Lanolin's waterproofing property aids sheep in shedding water from their coats, and the same conditioning properties are also excellent for softening skin.
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Safety: Highly purified lanolin products have the pesticide and detergent residues removed and the natural free alcohols reduced to below 1.5% to improve safety and reduce the allergic potential. However, even highly-purified lanolin should be avoided in patients with a known allergy to wool.
In summary, lanolin is a wax secreted by the sebaceous glands of wool-bearing animals, primarily used in the protection, treatment, and beautification of human skin. It is deeply moisturizing and mimics the skin's natural oils to deliver intense hydration. However, it should be avoided in patients with a known allergy to wool.
