Glycerin
HumectantEmollientNaturalAlso known as: Glycerol, Vegetable Glycerin
One of the most effective and well-studied humectants available. A sugar alcohol that draws water from the environment and deeper skin layers to hydrate the surface.
Routine placement
Serum · AM & PM
Time to results
Immediate hydration boost; 2-4 weeks for sustained improvement
Powerful humectant, strengthens skin barrier, improves skin texture, non-irritating, enhances penetration of other ingredients.
Present in most moisturizers and serums. Can be used at 2-5% in DIY formulations. Apply to damp skin for best results.
One of the most studied humectants with decades of safety and efficacy data. Improves skin hydration, barrier function, and mechanical properties.
Cautions
Very high concentrations (>20%) can feel sticky. In very dry climates, may draw water from skin rather than environment. Always combine with occlusives.
What does Glycerin do for skin?
Glycerin is used in skincare primarily as a humectant ingredient. Its effects depend on concentration and formulation. Check the benefits section above for specific details.
Is Glycerin safe for sensitive skin?
Glycerin is generally well-tolerated, but sensitivity varies by individual. Start with a patch test if you have reactive skin, and introduce gradually into your routine.
Can I use Glycerin every day?
For most skin types, daily use is appropriate at standard concentrations. If you experience any irritation, reduce frequency to every other day.
Does your skincare contain Glycerin?
Paste your product's ingredient list to check, or create your Skinularity ID for a full routine.
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Related to Glycerin
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A gentle alpha hydroxy acid derived from milk. Larger molecular size than glycolic acid means slower, more gentle penetration. Also has humectant properties.
A fat-soluble antioxidant that protects cell membranes from oxidative damage. Works synergistically with Vitamin C for enhanced photoprotection.
The provitamin form of Vitamin B5 that deeply hydrates and helps repair the skin barrier. Converts to pantothenic acid in the skin.
Technically a liquid wax ester, not an oil. Its composition closely resembles human sebum, making it exceptionally compatible with skin.