Glycerin is a natural compound derived from vegetable oils or animal fats that is commonly used in moisturizers and lotions. It is a humectant, which means it pulls water into the outer layer of the skin from deeper levels of the skin and the air. Glycerin is commonly used with occlusives, another type of moisturizing agent, to trap the moisture it draws into the skin. Here are some benefits of glycerin for the skin:

• Moisturizes the skin: Glycerin helps hydrate the skin by pulling water from the air to keep the skin hydrated and minimize water loss. It can remain in the skin for a while, which helps the skin retain moisture even when exposed to damaging environmental aggressors like pollution.

• Strengthens the skin barrier: Glycerin helps strengthen the skin barrier by protecting it from external irritation and by helping the skins natural lipids retain their structure.

• Improves skin appearance and texture: Glycerin can help leave the skin feeling soft and smooth, and can help reduce the appearance of wrinkles and fine lines.

• Calms and protects the skin: Glycerin creates a barrier between the skin and elements that can harm it, and can help alleviate temporary skin discomfort.

While glycerin is generally safe to use, it may cause blistering on the face if used undiluted, especially in certain conditions. It is recommended to use glycerin-containing products like soaps or lotions, and to stop using them if irritation occurs. It is also important to note that glycerin can leave a sticky or tacky residue on the skin if used excessively.