Ascorbyl Tocopheryl Maleate
INCI: ASCORBYL TOCOPHERYL MALEATE
Reviewed by Daisy · Last updated 2 Jun 2026
Also known as: Ascorbyl Tocopheryl Maleate
A stabilised vitamin C derivative that works as an antioxidant and skin conditioner
Best For Skin Types
All, Sensitive, Mature
Addresses
Usage Frequency
Daily
What Is Ascorbyl Tocopheryl Maleate?
Ascorbyl tocopheryl maleate is a synthetic compound that combines ascorbic acid (vitamin C) with tocopherol (vitamin E) and maleic acid. This formulation was developed to create a more stable version of vitamin C, which is notoriously prone to degradation when exposed to light, heat and air. The ingredient functions as both an antioxidant and emollient in skincare products.
Unlike pure ascorbic acid, this derivative does not require an acidic formulation to be effective, which can make it gentler for some users. It remains a relatively niche ingredient in mainstream skincare, though it appears in a modest proportion of antioxidant-focused products.
Benefits for Your Skin
How It Works
Ascorbyl tocopheryl maleate works through two complementary pathways. The ascorbic acid component donates electrons to neutralise free radicals, whilst the tocopherol (vitamin E) provides additional antioxidant coverage through a different chemical mechanism. Because these vitamins work synergistically, they may offer more robust protection than either ingredient alone.
The maleic acid component helps stabilise this combination, reducing the ingredient's tendency to degrade. This improved stability means the formula can remain effective for longer without requiring extreme pH adjustments or excessive preservatives.
Clinical Evidence & References
Evidence specifically targeting ascorbyl tocopheryl maleate is limited in published literature. However, the individual components—vitamin C and vitamin E—have substantial research supporting their antioxidant and skin-conditioning roles. Studies on these vitamins separately suggest they reduce visible signs of photoageing and support barrier function.
The theoretical advantage of this particular combination is its stability and gentler formulation profile compared to pure ascorbic acid. However, direct comparative studies on efficacy versus other vitamin C derivatives would help clarify its practical benefits in skincare routines.
How to Use
This ingredient is typically found in serums, creams and targeted treatments. Apply to clean skin before moisturiser, allowing it to absorb fully. It pairs well with other antioxidants and can be used alongside sunscreen (in fact, daytime use is recommended to maximise free radical protection). If you are new to vitamin C products, introduce gradually to monitor tolerance, though this derivative is generally gentler than L-ascorbic acid formulations.
Safety & Precautions
Frequently Asked Questions
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