Lanolin (from Latin lāna ‘wool’, and oleum ‘oil’), also called wool yolk, wool wax, or wool grease, is a wax secreted by the sebaceous glands of wool -bearing animals. Lanolin used by humans comes from domestic sheep breeds that are raised specifically for their wool. Historically, many pharmacopoeias have referred to lanolin as wool fat (adeps lanae); however, as lanolin lacks glycerides (glycerol esters), it is not a true fat. Lanolin primarily consists of sterol esters instead. Lanolin's waterproofing property aids sheep in shedding water from their coats. Certain breeds of sheep produce large amounts of lanolin.
Acetylated lanolin alcohol (sometimes known as sheep alcohol, lanolin alcohol, or wool alcohol) is a non-drying organic compound produced from lanolin, the fat of wool shearings, which has been reacted with acetic acid and a small amount of lye. There are synthetic variants available; however, the animal-derived product has more anti-allergenic tendencies. Acetylated lanolin alcohol is used as an emollient, to soften skin, but is mildly comedogenic, with a rating of 0-2 out of 5. For this reason, those who are prone to whiteheads and blackheads should patch test before using on a large scale. Acetylated lanolin alcohol can also be inflammatory to those with wool or lanolin allergies, and should be avoided in such cases.
Janolin [jaˈnɔlin] is a village in the administrative district of Gmina Rawa Mazowiecka, within Rawa County, Łódź Voivodeship, in central Poland. It lies approximately 7 kilometres (4 mi) north-west of Rawa Mazowiecka and 51 km (32 mi) east of the regional capital Łódź.