Nickel Sulfate — Allergy Risk & Safety Profile
INCI: NICKEL SULFATE
Also known as: Nickel
Key Facts
- CAS Number
- 7786-81-4
- Category
- contaminant
- Risk Level
- high
- Common Allergen
- Yes
- EU Status
- Restricted
- Found In
- eyeshadow, mascara
Is Nickel Sulfate safe in cosmetics?
Nickel Sulfate is rated high risk in cosmetic products. It is a known allergen that can cause contact dermatitis in sensitized individuals. Most common contact allergen worldwide. Can leach from cosmetic packaging or be present as impurity. This ingredient is restricted under EU cosmetic regulations. Commonly found in eyeshadow, mascara.
What is Nickel Sulfate?
The most common metal allergen. Can be a contaminant in cosmetics.
Allergy & Safety Information
Nickel Sulfate is classified as a high-risk ingredient. It is a known cause of allergic contact dermatitis. It is restricted or regulated in the EU. 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 Nickel Sulfate.
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 Nickel Sulfate 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 Nickel Sulfate, 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: Eyeshadow, Mascara. These product categories are the most common sources of Nickel Sulfate exposure based on formulation data.
Not sure if your products contain Nickel Sulfate? Paste the ingredient list into the free ingredient checker to scan for Nickel Sulfate and other allergens automatically.
Cross-Reactions
If you react to Nickel Sulfate, you may also react to:
Frequently Asked Questions
Is Nickel Sulfate safe for sensitive skin?
Nickel Sulfate is a known allergen and is generally not recommended for sensitive skin. Consider patch testing before use.
What products contain Nickel Sulfate?
Nickel Sulfate is commonly found in eyeshadow, mascara.
What does Nickel Sulfate do in cosmetics?
Nickel Sulfate functions as a contaminant in formulations. Most common contact allergen worldwide. Can leach from cosmetic packaging or be present as impurity.
Related Guides
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How to Read Ingredient Labels
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Step-by-step elimination method to identify your trigger.
Contact Dermatitis Guide
Symptoms, causes, patch testing, and treatment options.
Is Nickel Sulfate causing YOUR skin reactions?
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