Ammonium Acryloyl Dimethyltaurate/VP Copolymer is a high-performance synthetic rheology modifier and film-forming agent used to create sophisticated “gel-cream” textures. It provides a unique “quick-break” sensory experience, where the product transforms into a water-like consistency upon skin contact for immediate absorption.
- INCI Name:
- Ammonium Acryloyl Dimethyltaurate/VP Copolymer
- Chemical/Scientific Name:
- 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid monosodium salt polymer with 1-ethenyl-2-pyrrolidinone
- Common Aliases:
- Aristoflex AVC, Ammonium Acryloyldimethyltaurate/Vinylpyrrolidone Copolymer
| Category: | Texture Enhancers |
| Source Origin: | Synthetic |
| Comedogenic Rating: | 0 |
| Primary Industries: | Cosmetics, Dermatology, Personal Care |
| Solubility: | Water-soluble |
At a Glance: Properties & Effects
| Texture Enhancement: | |
| Formula Stability: | |
| Hydration/Moisture: | |
| Irritation Risk: |
- Primary Benefits: Creates elegant, non-sticky textures, stabilizes oil-in-water emulsions without additional emulsifiers, and provides a cooling sensation upon application.
- Potential Risks: Texture collapse when exposed to high electrolyte concentrations (salts) or very low pH levels.
Biological Action & Cosmetic Profile
Formulating modern skincare requires polymers that balance stability with sensory appeal. Structurally, this ingredient is a crosslinked, neutralized sulfonic acid-based copolymer. When dispersed in Aqua, the polymer chains expand through electrostatic repulsion, creating a three-dimensional network that thickens the solution. This process occurs without the need for pH neutralization, distinguishing it from traditional Carbomer variants.
The chemical framework functions primarily as a rheology modifier. It offers “yield value,” meaning it can suspend oil droplets or particulate matter in a stable matrix even at low viscosities. Because the polymer creates a light film on the stratum corneum, it reduces transepidermal water loss indirectly, though it lacks the intrinsic humectancy of Glycerin or Sodium Hyaluronate. Its “quick-break” property is a result of the polymer network collapsing slightly under the natural salts found on the skin surface, releasing the aqueous phase instantly.
Unlike many natural thickeners such as Xanthan Gum, this synthetic copolymer is highly resistant to shear. It maintains a smooth, velvety finish without the “tackiness” or “stringy” feel often associated with organic gums. This makes it the preferred choice for premium sunscreens, mattifying moisturizers, and lightweight serums.
Broader Applications & Origins
Manufacturing this ingredient involves the copolymerization of vinylpyrrolidone and acryloyldimethyltaurate monomers. While primarily recognized for its role in cosmetics, the underlying polymer technology is utilized in pharmaceuticals to stabilize topical suspensions. It is particularly compatible with organic solvents, allowing formulators to create clear gels containing up to 50% Alcohol Denat without losing viscosity.
Environmental considerations regarding synthetic polymers are ongoing. While it is not categorized as a microplastic under current ECHA definitions due to its solubility and physical state in finished products, it remains a non-biodegradable synthetic material. Its efficiency allows for very low inclusion levels (typically 0.5% to 2.0%) to achieve significant structural changes in a formula.
Routine Integration
- Synergies: Pairs exceptionally well with Niacinamide, Panthenol, and Propanediol. It is an excellent vehicle for water-soluble actives that require a fresh, non-greasy delivery system.
- Conflicts: Incompatible with high concentrations of electrolytes. Ingredients like Zinc Pca, Sodium Ascorbyl Phosphate, or mineral-rich clays can cause the gel to liquefy. It also requires a pH range typically between 4.0 and 9.0; extremely acidic treatments like high-strength Glycolic Acid may destabilize the network.
Clinical Consensus & Safety
Dermatological assessments from the Cosmetic Ingredient Review (CIR) Expert Panel conclude that this copolymer is safe for use in cosmetic formulations. Clinical trials and patch testing consistently demonstrate low potential for skin irritation or sensitization, even at maximum concentrations. Because of its high molecular weight, the polymer cannot penetrate the skin barrier, further ensuring its safety profile for sensitive skin types. It is non-comedogenic and does not interfere with the biological functions of the skin microbiome.
Is this ingredient a silicone?
No, it is a synthetic water-soluble polymer, not a silicone. While it provides a smooth “silicone-like” slip and finish, its chemical structure and behavior in water are entirely different from ingredients like Dimethicone.
Why does my gel-cream turn into liquid when I apply it?
This is a designed “quick-break” effect. The polymer network is sensitive to the natural salts (electrolytes) present on your skin. When the product touches your face, the salts cause the polymer to release the water it is holding, allowing for rapid absorption and a cooling sensation.
Can this polymer cause pilling?
Pilling usually occurs if the product is applied in too thick a layer or if it is used over heavy, oil-based serums that prevent the polymer film from adhering to the skin. When used in a well-balanced formula, it is much less likely to pill than natural gums or cellulose-based thickeners.