Glycerin
A humectant that draws water from the environment and deeper skin layers to help keep your skin's surface hydrated.
Glycerin (also called glycerol) is a naturally occurring humectant — a type of moisturising agent that attracts and holds water. It's found in plant oils and animal fats, and your skin actually produces small amounts of it as part of its own moisture-maintenance system. In skincare, it's one of the most well-studied and widely used hydrating ingredients available.
In formulations, glycerin works by binding water molecules to the outer layers of the skin, helping to reduce moisture loss throughout the day. You'll find it in cleansers, serums, moisturisers, and masks, typically at concentrations between 1% and 10%. It plays well with almost every other ingredient and is gentle enough for virtually all skin types, including sensitive skin. Because it's water-soluble, it's easy to formulate into lightweight, non-greasy textures.
For shoppers, glycerin is a reliable workhorse worth looking for on ingredient lists, especially if your skin feels tight or dehydrated. It pairs beautifully with occlusives like squalane or ceramides, which help seal in the moisture glycerin attracts. If you're in a very dry climate with low humidity, layering glycerin-based products under an occlusive is a smart move, since humectants can sometimes draw water from deeper skin layers when there's little atmospheric moisture to pull from.
Honest limits: glycerin is superb at supporting hydration, but it won't address concerns like pigmentation, breakouts, or loss of firmness on its own. It's a foundation ingredient, not a hero active. That said, well-hydrated skin functions better overall, so it quietly supports almost every other step in your routine. Rarely irritating, though if you notice any discomfort, it's always worth checking the full formula rather than blaming glycerin alone.
In formulations, glycerin works by binding water molecules to the outer layers of the skin, helping to reduce moisture loss throughout the day. You'll find it in cleansers, serums, moisturisers, and masks, typically at concentrations between 1% and 10%. It plays well with almost every other ingredient and is gentle enough for virtually all skin types, including sensitive skin. Because it's water-soluble, it's easy to formulate into lightweight, non-greasy textures.
For shoppers, glycerin is a reliable workhorse worth looking for on ingredient lists, especially if your skin feels tight or dehydrated. It pairs beautifully with occlusives like squalane or ceramides, which help seal in the moisture glycerin attracts. If you're in a very dry climate with low humidity, layering glycerin-based products under an occlusive is a smart move, since humectants can sometimes draw water from deeper skin layers when there's little atmospheric moisture to pull from.
Honest limits: glycerin is superb at supporting hydration, but it won't address concerns like pigmentation, breakouts, or loss of firmness on its own. It's a foundation ingredient, not a hero active. That said, well-hydrated skin functions better overall, so it quietly supports almost every other step in your routine. Rarely irritating, though if you notice any discomfort, it's always worth checking the full formula rather than blaming glycerin alone.
