3-O-Ethyl Ascorbic Acid Description
3-O-Ethyl Ascorbic Acid / Ethyl Ascorbic Acid (CAS 86404-04-8), often abbreviated as EAA, is a stable derivative of L-ascorbic acid (vitamin C) developed to overcome two major limitations of pure vitamin C in skincare: poor stability and limited skin penetration.
Structurally, it is created by introducing an ethyl group at the third carbon position of the ascorbic acid molecule. This subtle modification significantly improves its resistance to oxidation and enhances both its water solubility and partial lipid solubility, allowing it to better interact with the skin barrier.
Unlike pure ascorbic acid, which requires a low pH (<3.5) to remain stable, 3-O-ethyl ascorbic acid maintains its effectiveness within a milder pH range of 4.0–5.5. This makes it less irritating and more suitable for sensitive skin.
Importantly, EAA can be gradually converted into active vitamin C within the skin via enzymatic processes, enabling sustained biological activity and prolonged skin benefits.
Benefits of 3-O-Ethyl Ascorbic Acid
1. Powerful Antioxidant Protection
Like other vitamin C derivatives, EAA exhibits strong antioxidant activity, helping to neutralize free radicals generated by UV radiation and environmental pollutants.Scientific evidence shows that oxidative stress contributes to premature skin aging, including wrinkles and loss of elasticity. By reducing oxidative damage, EAA helps maintain healthier and more resilient skin.
2. Skin Brightening and Anti-Pigmentation
One of the most important functions of EAA is its ability to inhibit melanin production.It interferes with tyrosinase activity, a key enzyme in melanogenesis, helps reduce dark spots and hyperpigmentation and improves uneven skin tone and overall radiance
3. Collagen Boosting and Anti-Aging
Vitamin C is essential for collagen synthesis, and EAA retains this function after being converted in the skin.Key benefits include improved skin firmness and elasticity, a visible reduction in fine lines and wrinkles, and enhanced support for dermal structure and repair.
4. Anti-Inflammatory and Skin-Soothing Properties
3-O-ethyl ascorbic acid demonstrates anti-inflammatory properties, helping to reduce UV-induced irritation, alleviate redness and sensitivity, and promote the recovery of damaged skin.
5. Enhanced Stability and Skin Penetration
Compared with pure L-ascorbic acid, 3-O-ethyl ascorbic acid has greater chemical stability, with reduced oxidation under air and light exposure.It offers greater formulation flexibility and demonstrates improved skin absorption, particularly when combined with commonly used penetration enhancers such as glycerin and glycols.
3-O-Ethyl Ascorbic Acid Uses in Cosmetics
Due to its versatility and stability, EAA is widely used in skincare formulations, typically at concentrations between 0.5% and 5%, depending on the product type and desired efficacy.
1. Vitamin C Serums
The primary application format. These products target brightening, antioxidant protection, and anti-aging effects.
2. Brightening Essences
Designed for intensive care, often formulated with ingredients such as niacinamide or hyaluronic acid to enhance hydration and tone correction.
3. Moisturizers and Creams
Suitable for daily use, providing gradual improvement in skin tone and texture. Their mild pH makes them appropriate for sensitive skin.
4. Sunscreen-Enhanced Skincare Products
EAA is incorporated to help reduce oxidative stress caused by UV exposure, complementing traditional UV filters.
5. Facial Masks
Deliver short-term intensive treatment, improving skin brightness and hydration.
6. Spot Treatment Products
Often formulated at relatively higher concentrations to target hyperpigmentation and acne marks.
3-O-Ethyl Ascorbic Acid represents a next-generation vitamin C derivative that combines efficacy with improved stability and tolerability. Backed by physicochemical studies and skin permeation research, it delivers the core benefits of vitamin C-brightening, collagen support, antioxidant protection, and anti-aging effects-while being easier to formulate and more suitable for a wider range of skin types.
Where to buy 3-O-Ethyl Ascorbic Acid?
Jinan Sinov Biotechnology Co.,Ltd primarily manufacture cosmetic raw materials and functional ingredients. Due to our high-quality products and competitive prices, if you are looking for 3-O-Ethyl Ascorbic Acid, Jinan Sinov is your reliable choice.
You may also want to know:
Ethyl Ascorbic Acid Benefits: Why It's the Preferred Vitamin C Derivative for Skincare Manufacturers
3 O Ethyl Ascorbic Acid Vs L Ascorbic
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