What Is Acrylates/Lauryl Methacrylate/Tridecyl Methacrylate Crosspolymer?
Acrylates/Lauryl Methacrylate/Tridecyl Methacrylate Crosspolymer is a man-made ingredient created by linking together small acrylic molecules called monomers. The mix includes lauryl methacrylate and tridecyl methacrylate, then it is crosslinked with a helper molecule known as vinyloxazoline to form a strong three-dimensional network. All of the starting materials are produced in modern chemical plants from petroleum or natural gas feedstocks, so the final polymer is fully synthetic.
Base acrylic polymers have been used in cosmetics since the 1970s when chemists discovered they could form clear, flexible films on skin and hair. Over time, newer versions were developed to improve feel, shine and water resistance. This particular crosspolymer is one of those upgrades. By blending short and long fatty chains into the acrylic backbone, formulators gained better spreadability along with a more pleasant, non-tacky finish.
Production involves free-radical polymerization, a process where the chosen monomers are mixed, heated and triggered to bond together. The vinyloxazoline crosslinker ties individual chains at set points, giving the material its final strength. Afterward the raw polymer is purified, dried and milled into a fine powder or delivered as a pre-swollen gel that dissolves easily into cosmetic bases.
You will most often find Acrylates/Lauryl Methacrylate/Tridecyl Methacrylate Crosspolymer in lightweight face moisturizers, hydrating masks, primers, sunscreens, tinted creams, liquid foundations, mascara, hair styling gels and long-wear lip products. Formulators like it because it provides hold without stiffness and keeps pigments or active ingredients evenly spread on the skin.
Acrylates/Lauryl Methacrylate/Tridecyl Methacrylate Crosspolymer’s Cosmetic Benefits/Uses
This ingredient plays one key role in beauty formulas.
Film forming: Once applied it dries to a thin flexible layer that clings to skin or hair. This film helps lock in moisture, gives makeup longer wear, boosts water and sweat resistance in sunscreen and prevents color transfer from lip or eye products. Because the film is clear and breathable, it leaves a smooth finish that does not feel heavy or sticky.
Who Can Use Acrylates/Lauryl Methacrylate/Tridecyl Methacrylate Crosspolymer
This polymer is considered gentle enough for all major skin types including oily, dry, combination and normal skin because it sits on the surface and does not penetrate deeply. Sensitive or compromised skin may still use it, yet should be aware that any film former can occasionally trap heat or sweat which could aggravate existing redness or eczema.
The material is fully synthetic and made from petrochemical feedstocks so it contains no animal-derived components. That makes it suitable for both vegans and vegetarians provided the rest of the formula also meets their standards.
Current safety reviews have not flagged the ingredient as a concern for pregnancy or breastfeeding when used in topical cosmetics. It is classed as non-mutagenic and non-toxic in the amounts found in finished products. This is not medical advice and anyone who is pregnant or nursing should have a doctor review their skincare lineup to be on the safe side.
Acrylates/Lauryl Methacrylate/Tridecyl Methacrylate Crosspolymer does not absorb UV light so it does not make skin more sensitive to the sun. It also does not interfere with common actives like retinoids or acids.
Potential Side Effects/Adverse Reactions
Responses to any cosmetic ingredient can differ between individuals. The issues listed below are possible but uncommon for most people when the product is correctly formulated and used as directed.
- Mild skin irritation – a feeling of tightness, itching or slight redness where the film sits
- Allergic contact dermatitis – rare immune reaction leading to rash or swelling
- Eye stinging or watering – if the product migrates into the eye area before it fully sets
- Build-up on hair – repeated use in styling products may leave a dull residue that needs clarifying shampoo
If you notice any discomfort or unusual reaction stop using the product and consult a healthcare professional or dermatologist for guidance.
Comedogenic Rating
Rating: 1 (very low)
This crosspolymer creates a breathable surface film that sits on top of the skin and has a large molecular size so it does not slip into pores. It contains no heavy oils or waxes that commonly clog follicles, therefore the risk of triggering blackheads or whiteheads is minimal. It is generally fine for people who break out easily, though overall formula choices matter. If the product also includes rich butters or high-grade silicones the chance of congestion could rise.
Summary
Acrylates/Lauryl Methacrylate/Tridecyl Methacrylate Crosspolymer is mainly a film former. It dries into a clear flexible layer that helps makeup last longer, boosts water resistance in sunscreen, locks in moisture and keeps pigments evenly spread. By blending short and long fatty side chains into the acrylic backbone it glides on smoothly and avoids a stiff or tacky feel.
You will see it in many modern primers, foundations, moisturizers, sunscreens, mascaras and hair gels, yet it is not a headline ingredient so most shoppers are unaware of its role. Chemists value it because it is stable, easy to use and delivers reliable performance.
Safety reviews show a low risk of irritation, allergy or pore blockage when used at normal cosmetic levels. Still, everyone’s skin is unique so it is smart to patch test any new product that contains this polymer before applying it to the whole face or body.