Best Non-Toxic Eyelash Glue in 2025


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What we look for:
- Safer synthetic polymers like PEMA or crosspolymers
- Free from formaldehyde, toluene, phthalates, benzophenone-1, and other common toxins
- Minimal use of sensitizers and irritants
- Third-party certification when available
- Full transparency with every ingredient clearly disclosed
Not all products in this category are Welpr Approved, but they’re safer than most. The ones that meet our full standard will have the Welpr Approved tag. View our full standards here.
Common Harmful Chemicals in Eyelash Glue
Chemical Name
Why it’s harmful
Formaldehyde is a colorless, flammable gas with a pungent smell that's naturally produced in small quantities in human bodies and is also known as methanal amongst other names. It's used in the production of various items such as fertilizers, paper, plywood, and urea-formaldehyde resins as well as in some foods and household products like antiseptics, medicines, and cosmetics. Exposure to formaldehyde, which can occur through breathing contaminated indoor air, tobacco smoke, or ambient urban air can lead to respiratory symptoms, irritation of the eyes, nose and throat and has been linked to lung and nasopharyngeal cancer as well as leukemia. The EPA considers formaldehyde a probable human carcinogen (Group B1) and inhaling it can cause bronchospasm and pulmonary edema. Commercially, it's sold as formalin in solutions of 37%, 44%, or 50% and long-term exposure can cause first-degree burns, skin sensitization, squamous cell nasal cancer, and chronic pulmonary obstruction.
Formaldehyde and Cancer Risk, Cleaning Products & Indoor Air Quality, No More Toxic Tub, Campaign for Safe Cosmetics: Preservatives, Campaign for Safe Cosmetics: Formaldehyde And Formaldehyde-Releasing Preservatives, Formaldehyde may be found in cosmetic products even when unlabelled, Formaldehyde Found in Popular American Beauty Products, Hair Salons - Formaldehyde in Your Products, Formaldehyde in cosmetic products
Ethylene glycol ethers are associated with kidney injuries in rats and rabbits during 10-month inhalation toxicology studies. In humans, there's limited evidence revealing spontaneous abortions and decreased sperm counts as potential side effects. The substance is also linked to birth defects and testicular damage in animals, based on strong, positive evidence.
Ammonium hydroxide is a corrosive substance that can cause injury to the skin, eyes, and respiratory tract. High concentrations, either through inhalation or prolonged exposure, can lead to significant respiratory issues, including inflammation, pneumonia, and pulmonary edema. It is used in various industries such as fertilizers, dyes, explosives, plastics, and cleansing agents, among others. Due to its intense pungency and potential to cause extreme irritation and even life-threatening conditions, precautions such as wearing protective clothing and immediate cleansing of affected areas are recommended. It should be stored away from combustibles and heavy metals, in well-ventilated areas and in specified containers. Disposal guidelines also need to be referred from environmental regulatory agencies due to the hazardous nature of the substance.
The Facts About Ammonia, Chemical Safety Facts: Ammonia, ATSDR Chemical Profile, EPA: Ammonia, Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater, EPA Chemical Profile, Mass Casualties from Acute Inhalation of Chloramine Gas, Ventilatory disorders associated with occupational inhalation exposure to ammonia, Ecological and toxicological effects of inorganic nitrogen pollution in aquatic ecosystems: A global assessment, TOXICOLOGICAL PROFILE FOR AMMONIA ,
Epoxy resin is frequently used as an adhesive but can have health effects through skin contact or inhalation. Overexposure can lead to eye, nose, throat, and skin irritation, as well as skin allergies and asthma.





