Best For Skin Types
All, Dry, Sensitive, Combination
Addresses
Usage Frequency
Daily
What Is Glycereth-12?
Glycereth-12 is a glycerin ethoxylate — a chemically modified form of glycerin created by combining glycerin with ethylene oxide. This process yields a humectant ingredient that can hold and attract water molecules to the skin's surface.
In formulations, it serves dual purposes: it improves hydration by drawing moisture from the environment into the skin, and it helps control the thickness and consistency of products, making them easier to spread and apply evenly.
How It Works
Glycereth-12 is hygroscopic, meaning it attracts and binds water molecules. When applied to the skin, it draws moisture from the deeper layers of skin and the surrounding air, then holds that moisture at the surface. This creates a temporary hydrating effect without occluding the skin.
Its ethoxylate structure also allows it to dissolve evenly in both water and oil-based ingredients, making it a useful tool for cosmetic chemists to maintain product consistency and spreadability.
Clinical Evidence & References
Safety assessments by expert panels have concluded that glycerin ethoxylates, including Glycereth-12, are safe for use in cosmetics at their current concentrations and in non-irritating formulations. The ingredient functions as an effective skin-conditioning agent and viscosity controller.
However, specific clinical studies examining Glycereth-12's hydration efficacy in isolation are limited. Its benefits are best understood as part of a broader formulation strategy, where it contributes to overall hydration and sensory appeal rather than delivering dramatic results on its own.
Published Research
How to Use
Glycereth-12 is typically incorporated into serums, toners, and lightweight moisturisers. It works well in layered routines — apply it to damp skin before heavier moisturisers or occlusives to help seal in hydration. There is no need to adjust frequency based on the presence of this ingredient; use the product according to its intended purpose and your skin's tolerance.
Safety & Precautions
Frequently Asked Questions
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Take the skin quizOther forms of Glycereth-12
These appear on ingredients lists under different names but are the same substance. Glycereth-12 is the common form.
Related Ingredients
Glycereth-26
Synthetic, glycerin-based ingredient
Glucose
A type of sugar that is a key component of the skin’s natural moisturising factors (NMFs) | Works as a humectant to attract and bind water to the skin
Glutamic Acid
An amino acid that aids in hydrating and conditioning skin | Naturally present in the human body as well
Gluten Ingredients
Gluten is a protein found in grains like wheat, rye, and barley
Glycereth-18
Synthetic, glycerin-based ingredient
Glycerin
Found naturally in skin Helps skin retain moisture
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