What Is Bis(Glycidoxyphenyl)Propane/Bisaminomethylnorbornane Copolymer?
Bis(Glycidoxyphenyl)Propane/Bisaminomethylnorbornane Copolymer is a synthetic film-forming polymer created by linking two building blocks: bis(glycidoxyphenyl)propane, which comes from epoxy resin chemistry, and bisaminomethylnorbornane, a bicyclic amine. When these components react they form long chains that set into a flexible yet durable network on the skin.
The ingredient was introduced in the late 1990s as resin makers looked for clear lightweight coatings that could flex without cracking. Cosmetic chemists soon noticed these same qualities could help makeup and skincare products stay put, so the material transitioned from industrial coatings to beauty labs.
Manufacturing starts with bisphenol-A diglycidyl ether, a common epoxy resin precursor, and a norbornane-based diamine. Under controlled heat the epoxy groups open and link with the amine groups, forming a high-molecular-weight copolymer. Once purified and ground into a fine powder or dispersed in a solvent, it is ready for cosmetic use.
You will mainly find this copolymer in long-wear foundations, waterproof mascaras, liquid eyeliners, transfer-resistant lip colors, peel-off face masks, nail coatings and certain hair styling products where a flexible glossy film is desired.
Bis(Glycidoxyphenyl)Propane/Bisaminomethylnorbornane Copolymer’s Cosmetic Benefits/Uses
This ingredient’s single job is to act as a film former, meaning it creates a thin even layer on the surface after the product dries. That invisible film locks pigments in place, boosts water and smudge resistance, adds shine, helps active ingredients stay on the skin longer and can give a smooth touch finish without feeling heavy.
Who Can Use Bis(Glycidoxyphenyl)Propane/Bisaminomethylnorbornane Copolymer
This copolymer works for most skin types because it sits on top of the skin rather than sinking in. Normal, oily and combination skin often appreciate the light flexible film that keeps makeup in place. Dry skin can use it as well, though pairing it with a hydrating primer or moisturizer helps prevent a tight feeling once the film sets. Sensitive skin usually tolerates it since it has no fragrance or active acids, but those with a known sensitivity to epoxy resins should be cautious.
The material is fully synthetic with no animal derived parts so it is suitable for vegans and vegetarians. Its production does not rely on animal testing in most major markets that now ban those practices for cosmetics, although checking brand policies is still wise.
Current safety data shows no specific risks for pregnant or breastfeeding women when the ingredient is applied topically in rinse off or leave on products. Because hormone changes can make skin more reactive, expectant or nursing mothers should consult a healthcare professional before adding any new cosmetic item as a general safety step. This is not medical advice.
The copolymer does not absorb UV light or make skin more prone to sunburn so it is not considered photosensitising. It is also odorless and non volatile, making it unlikely to trigger headaches or respiratory irritation during normal use.
Potential Side Effects/Adverse Reactions
Responses to topical Bis(Glycidoxyphenyl)Propane/Bisaminomethylnorbornane Copolymer differ from person to person. The points below list possible but uncommon reactions. When the ingredient is used correctly in a well-formulated product most people will not notice any problems.
- Mild skin irritation or redness
- Contact dermatitis in individuals allergic to epoxy resin derivatives
- Transient tight or dry feeling, especially on very dehydrated skin
- Eye stinging if product containing the polymer is applied too close to the waterline
- Potential buildup on hair leading to dullness if not cleansed thoroughly
If you experience itching, swelling or consistent discomfort stop using the product and consult a qualified healthcare professional.
Comedogenic Rating
Rating: 1/5
Bis(Glycidoxyphenyl)Propane/Bisaminomethylnorbornane Copolymer earns a low score because its large, inert molecules sit on the skin surface rather than seeping into pores where acne starts. The film it forms is breathable and flexible, not heavy or greasy, so it is unlikely to trap oil or dead cells that could spark breakouts.
In practical terms this ingredient is generally safe for acne-prone skin, though individual reactions always vary.
Because it is water resistant a double-cleanse or thorough makeup removal step helps ensure no residue lingers overnight which could otherwise mix with other pore-clogging substances.
Summary
Bis(Glycidoxyphenyl)Propane/Bisaminomethylnorbornane Copolymer is a synthetic film former that creates a thin flexible shield on skin, hair or nails. This clear layer locks pigments in place, boosts water and smudge resistance, adds a subtle gloss and helps active ingredients stay where they are needed.
Although not as famous as silicones or acrylates, the copolymer is quietly popular in long-wear makeup and peel-off masks because it provides durability without a heavy feel.
Current safety data shows it to be low risk for irritation or sensitisation when used as directed. Still, everyone’s skin is unique so it is wise to patch test any new product that contains this polymer before full use.