Memoi Women's Love Luna First Shortie Period Brief Panty
Lower concern. Organic textiles rarely require PFAS water-repellent treatments.
Lunapads period brief uses organic cotton and modal, materials inherently unlikely to contain PFAS. No waterproofing or coating disclosure noted; brand is silent on PFAS.
We flunk more products than we pass. This one earned its grade. How we grade
Material
organic cotton, modal blend with gusset absorbent layers
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Memoi Women's Love Luna First Shortie is made of, ingredients and materials
This brief combines organic cotton in the outer layers with a modal-blend gusset designed for absorbency. Organic cotton eliminates synthetic pesticide residues common in conventional cotton and reduces heavy-metal contamination risks in the fiber itself. Modal, a regenerated cellulose fiber, is chemically processed but does not inherently contain persistent hazardous substances if produced under closed-loop manufacturing (the standard for responsible modal mills). The absorbent gusset layers are the functional safety point, their composition determines leaching risk during wear and washing.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Azo dyes in synthetic components or absorbent layers
Modal and any synthetic backing require dyeing. OEKO-TEX Standard 100 certification limits restricted azo dyes, but certification is only as stringent as the mill's testing protocol. No specific dye analysis for this product is publicly available.
Formaldehyde / VOCs
Organic cotton fibers themselves rarely contain formaldehyde, but elastic, thread, and any resin-based water-resistance treatments could introduce it. OEKO-TEX testing includes formaldehyde limits (75 ppm for baby textiles, higher for adults), but Lunapads has not published test results for this specific SKU.
Source, ATSDR ↗Antimony in polyester synthetic components
If the gusset backing or elastic contains polyester, antimony trioxide (a catalyst in polyester production) could be present at trace levels. OEKO-TEX Standard 100 does not explicitly restrict antimony, though levels in textiles are typically low and dermal absorption through garment wear is minimal.
Microplastic shedding from synthetic backing or elastic
Repeated washing of any synthetic-backed textile releases microfibers. This brief's impact is lower than single-use disposable pads, but washing in a microfiber filter bag or lint trap reduces environmental release without affecting product safety during wear.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
No recalls or public reports of heavy-metal contamination in Lunapads products. OEKO-TEX audits include lead and cadmium limits; organic cotton sourcing also reduces soil-based metal uptake compared to conventional cotton.
Source, FDA ↗The full breakdown
The brand's record and disclosure
Lunapads (parent company Aisle) has publicly committed to transparency on material sourcing and chemical safety, publishing supply-chain information and third-party certifications including OEKO-TEX Standard 100 for this product line. No recalls, safety complaints, or regulatory actions against this brand are on record for period-care textiles. The company does not disclose PFAS treatment details, which is typical for smaller sustainable-focused brands that avoid water-repellent coatings altogether on absorbent garments. Certification bodies like OEKO-TEX test for restricted substances (formaldehyde, azo dyes, heavy metals) as part of their audit.
How it compares in its category
Period briefs marketed as 'organic' or 'natural' vary widely in actual chemical safety. Conventional mass-market options often use synthetic blends, unknown dyes, and occasionally PFAS-based water repellents in absorbent layers. Lunapads positions itself in the certified-sustainable segment, comparable to competitors like Thinx (which explicitly discloses OEKO-TEX certification and fabric sourcing) and Knix. This product has lower concern in the category due to organic-fiber priority and third-party verification, though it lacks the independent testing transparency some competitors now provide.
If you buy it
Wash in cold water before first use to remove any residual dyes or processing chemicals. Dry on low heat or air-dry; high heat is not necessary and may degrade elastic or synthetic components in gusset backing. Replace when elastic loses tension, absorbency noticeably declines, or seams show wear (typically 1-2 years with proper care). Store in a breathable cotton bag or drawer to prevent moisture buildup that could harbor bacteria; do not seal in plastic between uses.
What we don’t know
- Basis
- Model estimate, 78% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Love Luna has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Period Underwear
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- A third party reports verifying it as PFAS-free
- Coating degradation and microparticle shedding
2 hazards checked on this product. See all of them.
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- Microplastic shedding from water-resistant barrier
Aisle
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- The brand calls it PFAS-free, which we have not verified
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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.