Aunt Flow · Period Pads
Aunt Flow Organic Cotton Menstrual Pad with Wings
Lower-concern choice; organic cotton pads avoid synthetic polymer coatings, but brand transparency on all layers would boost confidence.
Aunt Flow's organic cotton pads use a fiber-based structure without disclosed Teflon-family coating or Teflon-type coating coatings typical of waterproof/non-stick applications. The brand does not claim PFAS-free status or provide third-party testing data.
Shop Aunt Flow on Amazon →Material
Organic cotton, cellulose absorbent layers
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
period care is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Aunt Flow pads use certified organic cotton as the top layer and core absorbent material, avoiding pesticide residues common in conventional cotton. The absorbent layers use cellulose-based materials rather than superabsorbent polymers (SAP) or synthetic foams, which reduces exposure to plastic-derived chemicals and microplastics. Organic cotton certification means the crop was grown without synthetic pesticides or fertilizers, but the finished pad may still contain adhesives, elastic components, or backing materials not fully detailed by the brand. The wings typically use an elastic or film material whose exact composition is not publicly specified.
The brand's record and disclosure
Aunt Flow markets itself as a values-driven, woman-owned company focused on organic and non-toxic materials, but detailed ingredient disclosure (especially adhesives, elasticizers, and backing layers) is limited compared to competitors like Natracare or Seventh Generation. The brand does not publish third-party testing results, chemical certification lists, or material safety data sheets specific to this product. No major recalls or safety controversies are on record for Aunt Flow pads. The company's silence on PFAS testing across its product line is notable given industry-wide concerns about waterproofing additives in menstrual products.
How it compares in its category
Organic cotton pads sit in the middle-to-premium tier of menstrual product safety. They avoid the plastic-heavy construction of mass-market pads (Kotex, Always, Tampax) but typically cost more and may be less absorbent than synthetic-SAP blends. Natracare and Seventh Generation offer similar organic cotton bases with more detailed chemical transparency and third-party certifications. Aunt Flow's organic certification and cellulose core are genuine advantages; its lack of transparency on adhesives and backings is a modest gap relative to more disclosure-forward competitors.
If you buy it
Change pads every 4-8 hours to prevent bacterial overgrowth and odor, regardless of absorbency claims. Store in a cool, dry location away from direct heat or humidity to prevent cellulose degradation and mold. If you experience skin irritation or allergic reactions (itching, redness), discontinue use and consider a patch test or switch to a brand with more detailed adhesive/elastic specifications. Dispose of used pads in household waste, not toilets; organic cotton still requires proper disposal to avoid plumbing issues.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Adhesive composition and skin sensitization risk
Aunt Flow does not publicly disclose the adhesive used to attach wings or secure absorbent layers. Conventional pad adhesives may contain acrylates or other polymers that can cause contact dermatitis or allergic reactions in sensitive users; organic cotton alone does not guarantee adhesive safety.
Formaldehyde resins in cellulose or elastic components
Cellulose-based absorbents can sometimes be stabilized with formaldehyde resins. No evidence of this in Aunt Flow pads, but the brand's lack of full ingredient disclosure means residual formaldehyde cannot be ruled out. Typical levels in certified organic pads are negligible if present.
Elastic or synthetic wing material composition
Aunt Flow does not specify whether wing elastics are natural rubber, synthetic rubber, or plastic polymers. Synthetic elastics may contain phthalates, antimony, or other processing chemicals; a material data sheet would clarify exposure risk.
Microplastic shedding from backing or film layers
If the back or waterproof layer uses polyethylene film or similar plastic, minimal shedding is expected under normal use. Organic cotton construction reduces this risk compared to fully synthetic pads, but backing material is unspecified.
Chlorine bleach residues in processed cellulose
Cellulose layers may be bleached during manufacture. Organic certification does not automatically exclude chlorine processing of the finished product. No evidence of chlorine residues in Aunt Flow pads, and levels in certified pads are typically below health concern thresholds, but full processing transparency would confirm.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Period Pads
Organyc
Corman Organyc Certified Organic Cotton Feminine Pads
Certified organic cotton, no synthetic coatings disclosed
Lower-concern choice; organic cotton without disclosed coatings reduces PFAS risk, though brand offers no explicit assurance.
✓Verified PFAS-free by a third party
Organyc
Feminine Pads
Organic cotton, cellulose
Lower-concern choice; organic cotton base + explicit PFAS-free positioning + third-party certs.
✓Verified PFAS-free by a third party
Organyc
The Honey Pot Company Organic Herbal Regular Pads
organic cotton, cellulose core
Lower-concern period product; organic cotton pads unlikely to contain PFAS, though brand remains silent on testing.
✓Verified PFAS-free by a third party
More period pads grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.