Glycerin — Allergy Risk & Safety Profile
INCI: GLYCERIN
Also known as: Glycerol, Glycerine
Key Facts
- CAS Number
- 56-81-5
- Category
- humectant
- Risk Level
- low
- Common Allergen
- No
- Found In
- moisturizer, cleanser, toner, serum, all
Is Glycerin safe in cosmetics?
Glycerin is rated low risk in cosmetic products. It is not classified as a common allergen and is generally well-tolerated by most skin types. Safer alternatives include Glycerin, Hyaluronic Acid, Aloe Vera. Commonly found in moisturizer, cleanser, toner.
What is Glycerin?
One of the most effective and widely used humectants. Draws moisture to the skin. Extremely well-tolerated.
Allergy & Safety Information
Glycerin is considered safe for cosmetic use. No significant safety concerns have been identified at typical use concentrations. As with any cosmetic ingredient, discontinue use if irritation occurs.
This ingredient is considered low risk from an allergenicity perspective. Reactions are uncommon at typical cosmetic use concentrations. However, no ingredient is universally safe — if you notice redness, itching, or irritation after using a product containing this ingredient, discontinue use and monitor whether symptoms resolve.
About Humectant Ingredients
Humectants attract water molecules from the environment and from deeper skin layers, drawing moisture into the stratum corneum. They are among the safest cosmetic ingredients — molecules like glycerin, hyaluronic acid, and panthenol have extremely low sensitisation rates and are well-tolerated by almost all skin types.
Relevance for Glycerin: In very low humidity environments, humectants can draw moisture out of the skin rather than into it. This is particularly relevant for high-molecular-weight hyaluronic acid applied to dry skin without an occlusive layer to seal moisture in.
How to Identify Glycerin in Products
Cosmetic ingredients are listed by their INCI (International Nomenclature of Cosmetic Ingredients) name in descending order of concentration. To check whether a product contains Glycerin, scan the ingredient list for its INCI name exactly as it appears above. Ingredients present at 1% or less may appear in any order after the 1% threshold.
Product types to prioritise checking: Moisturizer, Cleanser, Toner, Serum, All. These product categories are the most common sources of Glycerin exposure based on formulation data.
Not sure if your products contain Glycerin? Paste the ingredient list into the free ingredient checker to scan for Glycerin and other allergens automatically.
Safer Alternatives
These ingredients serve a similar function with lower allergy risk:
Frequently Asked Questions
Is Glycerin safe for sensitive skin?
Glycerin is generally well-tolerated, even by sensitive skin types.
What products contain Glycerin?
Glycerin is commonly found in moisturizer, cleanser, toner, serum, all.
What does Glycerin do in cosmetics?
Glycerin functions as a humectant in formulations.
Related Guides
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How to Read Ingredient Labels
Decode INCI names and find hidden allergens in your products.
Find Your Skin Allergy Trigger
Step-by-step elimination method to identify your trigger.
Contact Dermatitis Guide
Symptoms, causes, patch testing, and treatment options.
Is Glycerin causing YOUR skin reactions?
SkinDetekt tracks your products and reactions to find your personal triggers. Download the app to find out.
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