Magnesium Ascorbyl Phosphate — Allergy Risk & Safety Profile
INCI: MAGNESIUM ASCORBYL PHOSPHATE
Key Facts
- CAS Number
- 113170-55-1
- Category
- active
- Risk Level
- low
- Common Allergen
- No
- Found In
- brightening serum
Is Magnesium Ascorbyl Phosphate safe in cosmetics?
Magnesium Ascorbyl Phosphate is rated low risk in cosmetic products. It is not classified as a common allergen and is generally well-tolerated by most skin types. Commonly found in brightening serum.
What is Magnesium Ascorbyl Phosphate?
Magnesium Ascorbyl Phosphate is a active commonly used in cosmetic and personal care products. It is generally considered safe for use in cosmetics at recommended concentrations.
Allergy & Safety Information
Magnesium Ascorbyl Phosphate is considered safe for cosmetic use at typical concentrations.
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 Active Ingredient Ingredients
Active ingredients are formulated to produce a specific skin benefit — exfoliation, brightening, anti-ageing, or acne treatment. They work by interacting directly with skin biology, which also means they carry higher irritation potential than passive ingredients like emollients or thickeners.
Relevance for Magnesium Ascorbyl Phosphate: Actives often require an adjustment period during which temporary redness, dryness, or sensitivity is normal. However, persistent reactions after 4–6 weeks of use, or reactions that worsen rather than improve, suggest true intolerance. Introduce only one active at a time to identify the cause of any reaction.
How to Identify Magnesium Ascorbyl Phosphate 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 Magnesium Ascorbyl Phosphate, 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: Brightening serum. These product categories are the most common sources of Magnesium Ascorbyl Phosphate exposure based on formulation data.
Not sure if your products contain Magnesium Ascorbyl Phosphate? Paste the ingredient list into the free ingredient checker to scan for Magnesium Ascorbyl Phosphate and other allergens automatically.
Frequently Asked Questions
Is Magnesium Ascorbyl Phosphate safe for sensitive skin?
Magnesium Ascorbyl Phosphate is generally well-tolerated, even by sensitive skin.
What products contain Magnesium Ascorbyl Phosphate?
Magnesium Ascorbyl Phosphate is commonly found in brightening serum.
What does Magnesium Ascorbyl Phosphate do in cosmetics?
Magnesium Ascorbyl Phosphate functions as a active in formulations.
Related Guides
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Contact Dermatitis Guide
Symptoms, causes, patch testing, and treatment options.
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