Cholesterol NF (National Formulary) and lanolin alcohol are both substances used in the cosmetic and pharmaceutical industries, but they have different chemical compositions and functions.

Cholesterol NF is a sterol that is naturally present in animal tissues, including humans. It is an essential component of cell membranes and plays a vital role in various biological processes. In cosmetic formulations, cholesterol NF is often derived from animal sources, such as wool grease or lanolin. It is used as an emollient and skin conditioning agent, helping to improve the texture and appearance of the skin. Cholesterol NF has moisturizing properties and can help restore the skin’s barrier function.

Lanolin alcohol, on the other hand, is a mixture of sterols and fatty alcohols that is derived from the wax-like substance called lanolin. Lanolin is obtained from the sebaceous glands of sheep and is commonly used in cosmetic and pharmaceutical products due to its emollient and moisturizing properties. Lanolin alcohol is a component of lanolin, and it acts as a skin conditioning agent and emulsifier. It helps to improve the texture and feel of the product, as well as provide moisturization to the skin.

While both cholesterol NF and lanolin alcohol have similar functions in cosmetic and pharmaceutical formulations, they are chemically distinct substances. Cholesterol NF is a specific sterol molecule, whereas lanolin alcohol is a mixture of various sterols and fatty alcohols derived from lanolin. However, it’s worth noting that cholesterol NF can be derived from lanolin as a source.