Best Non-Toxic Menstrual Cup in 2025


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What we look for:
- Medical-grade silicone
- PFAS-free and made without fragrance, dyes, chlorine, parabens, phthalates, or formaldehyde-releasing compounds
- Third-party certifications like MADE SAFE or EWG VERIFIED
- Full transparency on all ingredients and materials
Common Harmful Chemicals in Menstrual Cup
Chemical Name
Why it’s harmful
Acrylic acid is a colorless, volatile liquid used in plastics manufacturing, medicine, dentistry, among other things. Upon exposure, it absorbs and metabolizes swiftly, exhibiting a short half-life and zero potential for bioaccumulation. It could cause harm to eyes, skin, respiratory tract, and induce lung edema upon inhalation. Animal studies suggest acrylic acid has low to moderate acute toxicity and isn't teratogenic nor impacts reproduction, although in vitro genotoxicity tests have yielded inconclusive results. Acrylic acid has a low toxic impact on bacteria and soil microorganisms, but it's detrimental to algae and may reduce bacterial populations in penguins.
Perfluoroalkyls are synthetic chemicals known for their ability to resist oil, grease, and water, primarily used in surface protection products and fire-fighting foams. The two most abundant perfluoroalkyls are perflurooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). Studies have observed liver enlargement and elevated cholesterol in animals given high doses, and the presence of PFOS in various populations has raised environmental and health concerns, leading to the phase-out of some PFOS-based chemicals. Tests have shown a range of health effects in animals, including eye irritation, liver changes, teratogenic effects, and more, with no evidence of mutagenicity. However, no substantial link has been found between PFAS concentrations and increased cardiometabolic risk measures in human studies, and there are no known health effects from exposure when used as intended.
Perfluorooctanoic acid (PFOA) is primarily used to create salts that aid in the processing of producing fluoropolymers and fluoroelastomers. It also acts as a surfactant in firefighting foams, an intermediate in creating fluoroacrylic esters, and a crucial aspect in manufacturing Teflon and similar chemicals. However, exposure to PFOA can lead to adverse health effects, including alterations in thyroid hormone levels, lower fertility, an increased risk of cerebrovascular disease, higher cholesterol and triglyceride levels, a possible link to ADHD, smaller abdominal circumference and birth length in infants, an increased risk of common cold and gastroenteritis in children, and potentially prostate cancer mortality. Studies on animals have indicated possible liver and brain dysfunction, carcinogenicity, and reproductive and developmental toxicity. Ecotoxicity studies found alterations in genes linked to lipid metabolism, hormone action, immune responses, and mitochondrial functions in rare minnows exposed to PFOA.
Fluorinated compounds, including Polytetrafluoroethylene (PTFE), are used in cosmetics like foundation, powder, mascara, and anti-aging products. These compounds are known for their stability and are challenging to break down in the environment, with some found in remote regions. PTFE, often used for its smooth finish, can be derived from perfluorooctonoic acid (PFOA), which might leave residual PFOA in the final product. PFOA has been associated with cancer, mammary cancer, reproductive toxicity, endocrine disruption, and environmental concerns. While research on PTFE's direct cancer-causing potential is inconclusive, PFOA, a contaminant in PTFE-containing products, has health implications. PFOA has been detected in adults' body fluids worldwide and has links to mammary gland changes, endocrine disruption, delayed puberty in girls, and reproductive toxicity, including low birth weight. Additionally, it may affect the carcinogenicity of other chemicals when exposed together.











