Sodium Lauroyl Sarcosinate — Allergy Risk & Safety Profile
INCI: SODIUM LAUROYL SARCOSINATE
Key Facts
- CAS Number
- 137-16-6
- Category
- surfactant
- Risk Level
- low
- Common Allergen
- No
- Found In
- toothpaste, cleanser
Is Sodium Lauroyl Sarcosinate safe in cosmetics?
Sodium Lauroyl Sarcosinate 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 Decyl Glucoside, Coco Glucoside, Sodium Cocoyl Isethionate. Commonly found in toothpaste, cleanser.
What is Sodium Lauroyl Sarcosinate?
Sodium Lauroyl Sarcosinate is a surfactant commonly used in cosmetic and personal care products. It is generally considered safe for use in cosmetics at recommended concentrations.
Allergy & Safety Information
Sodium Lauroyl Sarcosinate 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 Surfactant / Cleansing Agent Ingredients
Surfactants reduce surface tension between water and oil, allowing products to cleanse, foam, and emulsify. They are essential in shampoos, cleansers, and body washes. However, surfactants vary widely in irritation potential — from harsh (sodium lauryl sulfate) to very mild (sodium lauroyl sarcosinate, decyl glucoside).
Relevance for Sodium Lauroyl Sarcosinate: Repeated daily use of strong surfactants disrupts the skin barrier by removing natural lipids, increasing sensitivity to other allergens over time. If you have reactive or eczema-prone skin, choosing low-irritation surfactants and limiting wash time reduces barrier damage.
How to Identify Sodium Lauroyl Sarcosinate 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 Sodium Lauroyl Sarcosinate, 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: Toothpaste, Cleanser. These product categories are the most common sources of Sodium Lauroyl Sarcosinate exposure based on formulation data.
Not sure if your products contain Sodium Lauroyl Sarcosinate? Paste the ingredient list into the free ingredient checker to scan for Sodium Lauroyl Sarcosinate and other allergens automatically.
Safer Alternatives
These ingredients serve a similar function with lower allergy risk:
Frequently Asked Questions
Is Sodium Lauroyl Sarcosinate safe for sensitive skin?
Sodium Lauroyl Sarcosinate is generally well-tolerated, even by sensitive skin types.
What products contain Sodium Lauroyl Sarcosinate?
Sodium Lauroyl Sarcosinate is commonly found in toothpaste, cleanser.
What does Sodium Lauroyl Sarcosinate do in cosmetics?
Sodium Lauroyl Sarcosinate functions as a surfactant in formulations.
Related Guides
Sulfates in Skincare & Shampoo
Which surfactants damage the barrier and safer alternatives.
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 Sodium Lauroyl Sarcosinate causing YOUR skin reactions?
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