Acetylated hyaluronic acid is a chemically modified derivative of hyaluronic acid (HA). Through an acetylation process, acetyl groups are introduced into the hyaluronic acid molecule. This small change significantly improves how the ingredient interacts with the skin.
In cosmetics, this ingredient is best known for its strong skin adhesion and long-lasting moisturizing effect. While regular hyaluronic acid mainly attracts and holds water, acetylated hyaluronic acid also forms a closer bond with the stratum corneum, helping moisture stay where it is needed.
Because of this dual action, it is often described as a "next-generation" hyaluronic acid for skincare formulations.
INCI Name and CAS Number
For cosmetic labeling and regulatory compliance, acetylated hyaluronic acid is identified as follows:
- INCI Name: Sodium Acetylated Hyaluronate
- CAS Number: 158254-23-0 (commonly referenced)
The ingredient is typically supplied as a powder or granule and is water-soluble, making it easy to incorporate into a wide range of cosmetic formulations.
How Is It Different from Regular Hyaluronic Acid?
To better understand the value of acetylated hyaluronic acid, it helps to compare it directly with conventional hyaluronic acid.
Stronger Skin Affinity
Regular hyaluronic acid works mainly by forming a water-binding film on the skin. However, it does not always stay in place for long. Acetylated hyaluronic acid, on the other hand, has enhanced affinity for skin proteins, which allows it to adhere more effectively to the skin surface.
As a result, the moisturizing effect lasts longer, even after washing or environmental exposure.
Improved Moisture Retention
Both forms are excellent humectants, but acetylated hyaluronic acid offers better moisture retention over time. Instead of just attracting water, it helps reduce moisture loss by forming a more stable hydration layer.
This makes it especially suitable for products designed for dry, sensitive, or mature skin.
Better Sensory Feel
Another difference lies in skin feel. Acetylated hyaluronic acid often provides a smoother, less sticky texture compared with some high-molecular-weight hyaluronic acids. This improves the overall user experience, particularly in leave-on products like serums and creams.
Basic Chemical Structure Explained Simply
From a structural point of view, acetylated hyaluronic acid is still based on the classic hyaluronic acid backbone. This backbone consists of repeating units of D-glucuronic acid and N-acetyl-D-glucosamine.
What changes is the addition of acetyl groups (-COCH₃) to specific hydroxyl groups on the molecule. These acetyl groups slightly increase the hydrophobic character of the molecule while maintaining water solubility.
This balanced structure is what allows acetylated hyaluronic acid to interact well with both water and skin lipids-an important reason for its improved performance in cosmetic applications.
Why Acetylation Matters in Skincare Formulations
The acetylation process is not just a chemical detail. It directly affects how the ingredient behaves in real products.
First, it increases resistance to enzymatic degradation on the skin. This means the ingredient does not break down as quickly as standard hyaluronic acid. Second, it improves formulation stability, especially in complex systems with other active ingredients.
For formulators, this translates into more predictable performance and longer-lasting benefits for end users.
Common Cosmetic Applications
Because of its properties, acetylated hyaluronic acid is commonly used in:
- Facial serums and essences
- Moisturizing creams and lotions
- Anti-aging skincare products
- Hydrating masks
- Sensitive skin formulations
It works well in both low and medium concentrations and can be combined with other humectants, peptides, ceramides, or botanical extracts.
Is Acetylated Hyaluronic Acid Safe?
Yes. Acetylated hyaluronic acid is generally considered safe and well-tolerated when used in cosmetic products. It is derived from hyaluronic acid, a substance naturally present in human skin.
When manufactured according to cosmetic-grade standards, it meets the safety and quality requirements of major global markets.
Conclusion
Acetylated hyaluronic acid is a functional upgrade of traditional hyaluronic acid. By introducing acetyl groups, this ingredient offers stronger skin adhesion, longer-lasting hydration, and improved formulation performance. Its clear INCI identification, stable chemical structure, and proven cosmetic benefits make it an excellent choice for modern skincare products.
For B2B buyers, formulators, and brand owners, understanding this ingredient helps in selecting more effective moisturizing solutions and developing higher-value cosmetic products.
Contact Us
If you are looking for a reliable supplier of Acetylated Hyaluronic Acid for cosmetic applications, or if you need technical support and specification details, feel free to contact us.
Email: alexxue@zhenyibio.com
Our team will be happy to support your formulation and sourcing needs.
References
- Papakonstantinou, E., Roth, M., & Karakiulakis, G. (2012). Hyaluronic acid: A key molecule in skin aging. Dermato-Endocrinology, 4(3), 253–258.
- Schanté, C. E., Zuber, G., Herlin, C., & Vandamme, T. F. (2011). Chemical modifications of hyaluronic acid for the synthesis of derivatives for biomedical applications. Carbohydrate Polymers, 85(3), 469–489.
- Cosmetic Ingredient Review Expert Panel. (2014). Safety Assessment of Hyaluronic Acid, Sodium Hyaluronate, and Related Salts. International Journal of Toxicology, 33(2).
- Bukhari, S. N. A., et al. (2018). Hyaluronic acid, a promising skin rejuvenating biomedicine: A review of recent updates and pre-clinical and clinical investigations. International Journal of Biological Macromolecules, 120, 1682–1695.
- Personal Care Products Council. (2022). INCI Naming and Cosmetic Ingredient Functions.