Humectants
Humectants are ingredients that attract and hold onto water from the air or deeper layers of the skin, helping to keep your skincare and haircare products feeling hydrating and fresh. They are commonly found in moisturisers, serums, masks and hair conditioners to prevent dryness and improve softness. Popular humectants include glycerin, hyaluronic acid and sorbitol.
How it works in skincare
In cosmetics and skincare, humectants work by drawing moisture towards themselves through hygroscopic action. When applied to skin or hair they pull water molecules from the lower layers of the epidermis or from the surrounding humidity, binding them to the surface to maintain hydration levels and prevent transepidermal water loss. This plumping effect helps formulas feel lighter while supporting the skin’s natural moisture balance without leaving a greasy residue.
Key benefits
- Draws moisture into the upper layers of skin
- Helps maintain skin hydration throughout the day
- Improves the feel of softness and suppleness
- Enhances the spreadability of creams and serums
- Reduces the appearance of dry, flaky patches
- Supports healthier-looking hair by retaining moisture
Best for
dry skin, dehydrated skin, normal skin, sensitive skin, mature skin
Where it comes from
Many humectants are naturally derived from plant sources such as coconut, corn, sugar beet or seaweed. Glycerin, for example, is typically obtained from vegetable oils through a process of hydrolysis.