The Ordbliss · Period Underwear
The Period Company The High Waisted Period. in Cotton For Medium Flows Women's
Lower-concern period product; cotton construction avoids obvious PFAS vectors, but brand transparency is absent.
The Period Company's high-waisted period underwear is made primarily of cotton, which carries lower inherent PFAS risk compared to synthetics or water-resistant textiles. However, the brand does not publicly disclose whether elastic, thread, or any finishes contain PFAS, a gap common in period-care marketing.
Shop The Ordbliss on Amazon →Material
cotton absorbent layer
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
This product uses a cotton absorbent layer for the gusset, which is the safest baseline textile choice for prolonged skin contact. Cotton itself does not leach synthetic chemicals the way polyester or nylon do, and it avoids microplastic shedding. However, the specific dye chemistry (acid dyes, reactive dyes, or pigment dyes used to color the fabric) and any water-resistant backing or finish applied to prevent leakage remain undisclosed by the brand. Without fiber-by-fiber testing, heavy metals in synthetic dyes or formaldehyde-releasing resins in wrinkle-resistant finishes cannot be ruled out.
The brand's record and disclosure
The Ordbliss ("The Period Company") maintains minimal public disclosure on material sourcing, dye suppliers, or third-party testing. No published certifications (OEKO-TEX, GOTS, or similar) are evident in widely available product information. No major safety recalls or allegations have surfaced in public databases, but silence on composition is not the same as safety assurance. For a product in direct contact with sensitive mucous tissue for 8-12 hours at a time, this lack of transparency is a material gap.
How it compares in its category
Period underwear as a category has grown rapidly, and competitors vary widely: some brands (e.g., Knix, Thinx) publish OEKO-TEX certification or use organic cotton; others disclose backing materials and dye standards. The Ordbliss product sits in the middle-market tier on price and does not differentiate itself through certifications or published material audits. The cotton-based absorbent layer is a strength relative to fully synthetic alternatives, but the lack of disclosed backing material (likely a polyurethane or polymer laminate to prevent leakage) leaves a significant blind spot.
If you buy it
Wash in cold or warm water (not hot; heat can degrade polymer backings or trigger dye migration) with mild detergent, and avoid bleach and fabric softener, which can irritate vulvar tissue and degrade absorbency. Replace every 6 to 12 months, as the elastic and absorbent layers degrade with use and laundering, potentially releasing fibers or allowing bacteria to accumulate. If you experience itching, rash, or unusual odor within the first week, discontinue and switch to a brand with published testing. Air-dry rather than machine-dry to extend the life of the backing layer.
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.”
Synthetic dyes and heavy metals
Cotton dyes (especially darker colors like black used in this product) can contain cadmium, lead, or chromium if sourced from suppliers without strict controls. The Ordbliss has not disclosed dye standards or testing, leaving this unconfirmed but plausible for a budget-tier product.
Formaldehyde-releasing resins in finishes
Many absorbent and wrinkle-resistant finishes applied to cotton include formaldehyde-releasers to improve durability. No finish specification is published by the brand, so this cannot be ruled out. Prolonged skin contact with formaldehyde residue can cause contact dermatitis.
Polymer backing leachates (polyurethane or PVC)
Period underwear requires a water-resistant backing layer (not disclosed in this product's marketing). Polyurethane or PVC backings can leach plasticizers or monomers, especially under heat or with acidic/menstrual fluids. Brand silence on backing material prevents assessment.
Elastic degradation and fiber shedding
Elastane and polyurethane elastics in period underwear degrade with repeated laundering and body heat, shedding microfibers. No brand disclosure of elastic grade or durability standards; replacement intervals are not specified, increasing exposure over time.
Allergens in fragrance or antimicrobial treatments
No fragrance or antimicrobial marketing is evident in the product description. However, undisclosed treatments are possible; the brand should be contacted directly if sensitivities are a concern.
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 Underwear
JAMA Organic
LOLA Organic Cotton Period Underwear
Organic cotton with moisture-wicking gusset
Lower PFAS concern, organic cotton base with no waterproof claims, but brand doesn't explicitly address PFAS.
✓Verified PFAS-free by a third party
JAMA Organic
Organyc Certified Organic Cotton Disposable Period Underwear for Sensitive Skin
certified organic cotton with absorbent core
Lower concern, organic cotton base suggests minimal PFAS risk, but no explicit PFAS statement limits confidence.
✓Verified PFAS-free by a third party
Ruby Love
Women's Hipster Period Underwear
organic cotton with waterproof coating
Lower concern, PFAS-free verified; buy with confidence.
✓Lab test found no PFAS
More period underwear 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.