Liquid Paraffin vs. Glycerin — What's the Difference?

Liquid Paraffin and Glycerin are both substances commonly found in a variety of products, including those for skincare and pharmaceuticals. Liquid Paraffin, also known as mineral oil, is a clear, colorless, and odorless oil derived from petroleum. Its primary use is as a laxative and a moisturizer in skincare products. On the other hand, Glycerin, sometimes known as glycerol, is a sugar alcohol derived from animal or vegetable fats.

Liquid Paraffin is often used in cosmetics, ointments, and lotions because of its moisturizing properties. It creates a barrier on the skin's surface that helps retain moisture. Conversely, Glycerin is a humectant, which means it attracts water to itself. In skincare products, Glycerin draws moisture from the air and helps the skin retain it, making the skin feel soft and hydrated.

In the pharmaceutical industry, Liquid Paraffin is used as a laxative. When consumed, it helps ease the passage of stool. Glycerin, in this context, is also used as a laxative but in a suppository form. It works by irritating the bowel and drawing water into the intestine, making it easier to pass stool.

Liquid Paraffin can be found in products like baby oils and various creams for its occlusive properties. It’s not water-soluble and remains on the skin's surface. Glycerin, however, is water-soluble and can be found in a broader range of products, from lotions to soaps, and even in foods as a sweetener or preservative.

While both Liquid Paraffin and Glycerin have their distinct uses, they often work in tandem in various products to provide a balanced moisturizing effect. For instance, a skincare product might use Liquid Paraffin to lock in moisture and Glycerin to attract additional moisture to the skin.