Acrylates Crosspolymer-4: What Is It, Skin Benefits, Cosmetic Uses & Side Effects

Priya Singh
Fact-Checker: Priya Singh
This article was last updated on: October 18, 2023
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Understanding the world of cosmetics can often be a complex task. The industry is rife with scientific terminologies, making the ingredients list on your favorite product look more like a chemistry experiment than a skincare routine.

One ingredient that might have caught your attention is Acrylates Crosspolymer-4. The name itself may seem intimidating and like something straight out of a science textbook, but it’s quite common in various cosmetic products.

In this article, we’ll explore Acrylates Crosspolymer-4 in detail, diving into its properties and examining why it has become a staple in many cosmetic formulations!

What is Acrylates Crosspolymer-4?

Acrylates Crosspolymer-4, also known as Acrylates Copolymer, is a polymer primarily composed of acrylic acid, methacrylic acid, or one of its simple esters, crosslinked with trimethylolpropane triacrylate.

In more straightforward language, this means it’s a synthetic ingredient composed of multiple repeating units bonded together, and it’s used in cosmetic products due to its unique properties.

Its primary role in cosmetics lies in its ability to enhance texture and emulsions’ stability. Essentially, it helps keep all the ingredients within a product mixed and prevents them from separating. Additionally, it forms a thin film on the skin’s surface, which is beneficial in products designed for surface hydration or to protect the skin from environmental stressors.

Acrylates Crosspolymer-4 is typically incorporated into wider formulations rather than used as a stand-alone ingredient due to its beneficial synergistic effects with other components. Its usage concentration in cosmetic products varies, but it’s generally used around 0.1-5%.

Who Can Use Acrylates Crosspolymer-4?

Acrylates Crosspolymer-4 is considered to be a versatile ingredient that can be used by all skin types. Whether your skin is oily, dry, normal, or combination, this ingredient can be a useful addition to your skincare routine due to its gentle and non-irritating nature.

For individuals following a vegan or vegetarian lifestyle, it’s important to note that Acrylates Crosspolymer-4 is a synthetic ingredient, meaning it’s not derived from animal sources or by-products. Hence, it is suitable for vegans and vegetarians.

Regarding its use in pregnancy or while breastfeeding, there is currently no specific information to suggest that Acrylates Crosspolymer-4 would be unsuitable. However, as with any cosmetic product, it’s always advisable to consult with your healthcare provider if you have any concerns or if you experience unusual skin reactions.

Acrylates Crosspolymer-4 Skin Benefits

Acrylates Crosspolymer-4 is a valuable asset for skincare due to the following benefits:

  • Cleansing: One of the notable strengths of Acrylates Crosspolymer-4 is its cleansing properties – it can efficiently eliminate dirt and excess oil from the skin’s surface when applied. The result is a clean and refreshed complexion without over-drying your skin or disturbing the natural moisture balance. This makes it an excellent ingredient in facial cleansers, offering a gentle yet effective cleansing experience.
  • Film Forming: Apart from cleansing, Acrylates Crosspolymer-4 also plays a crucial role as a film former. This means it can create a thin layer on the skin’s surface upon application. This layer helps smooth the skin, reduce moisture loss, and protect against external stressors such as pollution and UV radiation.

However, it’s worth noting that these benefits are not permanent and require continued use of products containing Acrylates Crosspolymer-4. Regular application is needed to maintain its positive effects on the skin.

Acrylates Crosspolymer-4’s Non-active Cosmetic Uses

When we talk about “non-active” uses of an ingredient, we’re referring to the functions it has that don’t directly affect the appearance or health of the skin but are crucial for the formulation of the product itself. These are the roles Acrylates Crosspolymer-4 can play:

  • Emulsion Stabilising: Emulsions are water and oil mixtures that naturally tend to separate. As an emulsion stabilizer, Acrylates Crosspolymer-4 helps to keep these elements combined for a longer period. This contributes to the product’s consistency and prolongs its shelf life, ensuring that it remains mixed and effective for use.
  • Surfactant: Beyond its cleansing capabilities, the surfactant properties of Acrylates Crosspolymer-4 also contribute to forming a uniform distribution of ingredients. It helps in dispersing the ingredients that would otherwise not mix well, ensuring an even distribution of all components within the product.
  • Viscosity Controlling: Viscosity refers to the thickness of a product – whether it’s more liquid-like or more solid-like. Acrylates Crosspolymer-4 acts as a viscosity controller, meaning it can alter the thickness of the product. This property allows the manufacturers to achieve the desired consistency, whether it’s a lightweight lotion or a rich cream.

Acrylates Crosspolymer-4 Potential Side Effects

Just as every individual has a unique fingerprint, everyone also has a unique “skinprint”. This refers to the fact that each person has a different skin type, resulting in variations in how their skin responds to different ingredients and products. As such, while Acrylates Crosspolymer-4 is generally considered safe for most users, it’s always possible for some individuals to experience side effects.

Potential side effects of Acrylates Crosspolymer-4 could include:

  • Skin irritation, including redness or a rash
  • Dryness or flakiness
  • Minor allergic reactions

If you experience any of these reactions while using a product containing Acrylates Crosspolymer-4, you should stop using the product immediately and consult with a healthcare professional. It’s important to remember that even if an ingredient is generally considered safe, your personal skin response could differ.

Despite these potential side effects, it’s worth noting that adverse reactions to Acrylates Crosspolymer-4 are quite rare. In general, it is regarded as a safe and effective ingredient for a multitude of cosmetic uses.

As a final note, conducting a patch test is essential whenever introducing a new product into your skincare routine. This involves applying a small amount of the product to a discrete area of skin and watching for any reaction over a 24-hour period. Check out our patch-testing guide for step-by-step instructions on how to do this.

Comedogenic Rating

Acrylates Crosspolymer-4 has a comedogenic rating of 0/5. This means that it is non-comedogenic and is unlikely to clog pores, making it suitable for all skin types, even those prone to acne and breakouts. The low rating can be attributed to its molecular structure.


Achieving skincare success is often a process of trial and error, and once you’ve identified ingredients that work for your skin, consistency is key. That’s where Acrylates Crosspolymer-4 comes in. With its dual role as a non-active ingredient stabilizing and enhancing the texture of products and an active ingredient offering immediate skin benefits like cleansing and film forming, it’s a worthy addition to many skincare formulations.

The beauty of Acrylates Crosspolymer-4 lies in its versatility; it has a neutral impact on the skin, meaning it doesn’t clog pores or cause irritation for most people, which makes it a universally appreciated ingredient.

In terms of popularity, Acrylates Crosspolymer-4 may not be as well-known as ingredients like hyaluronic acid or retinol, but it’s a common component in many cosmetic and skincare products due to its advantageous properties. It’s similar to other common polymers like Acrylates Copolymer and Acrylates/C10-30 Alkyl Acrylates Crosspolymer, which share its ability to improve product texture and stability.

The time to see results from using products with Acrylates Crosspolymer-4 depends on its role in the specific product and what other ingredients it’s combined with. As an enhancer of product texture and stability, the effects might not be visually evident, but they contribute to the overall feel and efficiency of the skincare product.

Although it’s an ingredient with a seemingly complex name, its purpose in your skincare products is simple and beneficial. It’s non-comedogenic and vegan-friendly, enhances product consistency, and provides some immediate skincare benefits. Like any other ingredient, it’s always wise to monitor your skin’s response when using a new product, but generally, Acrylates Crosspolymer-4 is a safe and beneficial ingredient to have in your skincare arsenal.

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