Polyacryloyldimethyltaurate Polyoxymethylene Melamine: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: July 1, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Polyacryloyldimethyltaurate Polyoxymethylene Melamine?

Polyacryloyldimethyltaurate Polyoxymethylene Melamine is a specialty polymer salt created by combining polyacryloyldimethyltaurate, a synthetic acrylic copolymer, with polyoxymethylene melamine, a melamine based resin. Together they form a fine white powder that disperses easily in water or alcohol, giving formulators a user friendly thickening and film building agent.

The backbone of polyacryloyldimethyltaurate comes from acrylic acid that has been reacted with dimethyltaurine to introduce a mild, skin compatible charge. Polyoxymethylene melamine is produced by reacting melamine with formaldehyde, then linking the units into a small, highly crosslinked resin. When these two parts are neutralized together, the positive and negative charges lock into a stable salt that behaves like a single ingredient.

The material was first explored by industrial chemists looking for flexible, water resistant coatings in the late 1990s. Cosmetic labs soon noticed that the same properties could help stabilize creams and gels without a heavy feel. Regulatory reviews cleared the polymer for topical use, leading to its wider adoption in face masks, lightweight moisturizers, long wear foundations, hair styling creams and anti aging serums that benefit from a soft yet durable film on the skin or hair.

Manufacturing starts with separate polymerization of the acrylic and melamine molecules. The two finished polymers are then slowly blended in a controlled pH environment so they form a salt rather than an unpredictable mix. After filtering and spray drying, the powder is sealed to keep out moisture until it is added to a cosmetic formula.

Polyacryloyldimethyltaurate Polyoxymethylene Melamine’s Cosmetic Benefits/Uses

This ingredient offers multiple technical perks that translate into a smoother product experience for the user

  • Binding: Helps hold together pigments, oils and water so the formula remains uniform during shelf life and glides on evenly during use
  • Film forming: Creates an invisible, flexible layer on skin or hair that locks in moisture, boosts product longevity and delivers a soft touch finish without feeling sticky

Who Can Use Polyacryloyldimethyltaurate Polyoxymethylene Melamine

This polymer salt is generally suited to all skin types. Its light film prevents moisture loss without leaving a greasy residue, making it helpful for dry skin while still feeling comfortable on oily or combination skin. Sensitive or redness-prone users usually tolerate it well because it carries a neutral charge and lacks fragrance or known sensitizing preservatives. Those with a rare allergy to melamine resins or acrylics, however, may want to steer clear.

The ingredient is fully synthetic and contains no animal-derived matter so it aligns with vegan and vegetarian lifestyles.

Current safety assessments show no systemic absorption from topical use, so products containing this polymer are not expected to pose a risk for pregnant or breastfeeding women. That said this is not medical advice and anyone who is pregnant or nursing should confirm suitability with a healthcare professional.

Polyacryloyldimethyltaurate Polyoxymethylene Melamine does not increase photosensitivity and can be used day or night without extra sun precautions beyond the usual SPF recommendation. It also plays well with other common skincare actives, so formulators often pair it with vitamins, acids and sunscreens without stability issues.

Potential Side Effects/Adverse Reactions

Responses to any cosmetic ingredient vary by individual. The effects listed below are possible but unlikely for most people when the product is manufactured and used as directed

  • Mild skin irritation such as transient redness or itching, usually in very sensitive users
  • Allergic contact dermatitis in those already sensitized to acrylic or melamine resins
  • Temporary tight or dry feeling if applied in a high-film formula on already dehydrated skin
  • Eye irritation if the raw powder is inhaled or if a concentrated product is rubbed into the eye area

If any of these reactions occur discontinue use and seek medical advice if symptoms persist or worsen.

Comedogenic Rating

Rating: 1/5. Polyacryloyldimethyltaurate Polyoxymethylene Melamine is a high-molecular-weight, water-dispersible polymer that does not penetrate pores or leave an occlusive oily film, so it has very little potential to clog follicles. Its main role is to bind and form lightweight films, functions that generally sit on the skin surface and rinse away easily. This makes it suitable for those prone to acne or frequent breakouts. As with any ingredient, the final product’s overall formula and use level can influence pore-clogging potential, but on its own this polymer is considered low risk.

Summary

Polyacryloyldimethyltaurate Polyoxymethylene Melamine works as a binder and film former, holding water, oils and pigments together while laying down a flexible moisture-sealing veil on skin or hair. These abilities help creams feel smoother, make makeup last longer and give hair products subtle hold without stiffness. Though not a blockbuster name, it is quietly popular in modern lightweight formulas thanks to its versatility and pleasant skin feel. Safety reviews show it is well tolerated with minimal irritation or sensitization concerns, so most people can use it confidently. As with any new cosmetic ingredient, do a quick patch test when trying a product that contains it to be on the safe side.

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