Tosylamide/Formaldehyde Resin โ Allergy Risk & Safety Profile
INCI: TOSYLAMIDE/FORMALDEHYDE RESIN
Also known as: TSF Resin, Toluenesulfonamide Formaldehyde Resin
Key Facts
- CAS Number
- 25035-71-6
- Category
- film former
- Risk Level
- high
- Common Allergen
- Yes
- Found In
- nail polish
Is Tosylamide/Formaldehyde Resin safe in cosmetics?
Tosylamide/Formaldehyde Resin is rated high risk in cosmetic products. It is a known allergen that can cause contact dermatitis in sensitized individuals. Common cause of eyelid and facial dermatitis from nail polish. Commonly found in nail polish.
What is Tosylamide/Formaldehyde Resin?
Film-former in nail polish. Part of the 'toxic trio'. Can cause eyelid dermatitis from nail contact.
Allergy & Safety Information
Formaldehyde Resin is classified as a high-risk ingredient. It is a known cause of allergic contact dermatitis. Individuals with sensitive skin or a history of contact allergies should avoid products containing this ingredient. A patch test is recommended before first use of any product containing Formaldehyde Resin.
This ingredient is classified as high risk from an allergenicity perspective. It is a recognised cause of allergic contact dermatitis with a relatively high sensitisation rate in patch-tested populations. People with a history of skin reactions to cosmetics, or with conditions such as eczema or sensitive skin, should exercise particular caution.
How to Identify Tosylamide/Formaldehyde Resin 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 Tosylamide/Formaldehyde Resin, 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: Nail polish. These product categories are the most common sources of Tosylamide/Formaldehyde Resin exposure based on formulation data.
Not sure if your products contain Tosylamide/Formaldehyde Resin? Paste the ingredient list into the free ingredient checker to scan for Tosylamide/Formaldehyde Resin and other allergens automatically.
Cross-Reactions
If you react to Tosylamide/Formaldehyde Resin, you may also react to:
Frequently Asked Questions
Is Formaldehyde Resin safe for sensitive skin?
Formaldehyde Resin is a known allergen and is generally not recommended for sensitive skin. Consider patch testing before use.
What products contain Formaldehyde Resin?
Formaldehyde Resin is commonly found in nail polish.
What does Formaldehyde Resin do in cosmetics?
Formaldehyde Resin functions as a film_former in formulations. Common cause of eyelid and facial dermatitis from nail polish.
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Contact Dermatitis Guide
Symptoms, causes, patch testing, and treatment options.
Is Tosylamide/Formaldehyde Resin causing YOUR skin reactions?
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