Kotex · Incontinence Pads & Protection
Kotex Maxi Overnight Pads
Waterproof backing treatment unspecified; PFAS risk unclear without disclosure.
Kotex does not disclose whether waterproof backing uses PFAS-based durable water repellents. Standard menstrual pads often contain treated materials for leakage protection, but specific formulation unknown.
The safe swap
Tranquility
Tranquility Personal Care Pads 13.5" x 6.5", 96/Case
70/100 safety
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
absorbent core, nonwoven layers, waterproof backing (unspecified treatment)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
period care is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
Kotex Maxi Overnight pads use a multi-layer absorbent core (likely superabsorbent polymer and wood pulp), nonwoven top/bottom sheets, and a waterproof backing of unspecified chemical composition. The waterproof layer is the primary concern because manufacturers often use either fluorinated compounds (PFAS-based) or alternative polymers; Kotex has not publicly disclosed which approach they use. Absorbent cores themselves carry minimal risk if the polymer is food-contact-grade, but manufacturing residues (unreacted monomers, processing additives) are not routinely disclosed for this category.
The brand's record and disclosure
Kotex (Kimberly-Clark subsidiary) has not published detailed material safety data or ingredient disclosure for their period-pad products, which is standard opacity in the menstrual-care industry. The brand faces no major recalls or formal contamination warnings in public databases as of recent data. However, Kimberly-Clark's parent company has faced criticism for vague PFAS policies and slow transition away from fluorinated water-resistance coatings in other product lines, suggesting inconsistent commitment to transparency across the portfolio.
How it compares in its category
Most overnight pads on the market use similar multi-layer absorbent designs with opaque backing treatments; Kotex is neither a leader in material transparency nor an outlier in safety incidents. Organic-certified or PFAS-transparent brands (e.g., Seventh Generation, Natracare) explicitly disclose their use of PFAS-free backings, which Kotex does not. Kotex's price-point and distribution suggest cost-driven material choices typical of mass-market menstrual products, where water-resistance convenience often outweighs chemical disclosure.
If you buy it
Store pads in a cool, dry place away from direct heat or moisture to prevent degradation of the backing layer, which could release microfibers or trapped processing residues. Do not expose to temperatures above normal body/room conditions, as absorbent polymers can degrade. Replace pads if backing shows visible wear, flaking, or discoloration. If you experience unexplained skin irritation or allergic reactions, discontinue use and consider brands with published hypoallergenic or PFAS-free certifications.
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.”
PFAS in waterproof backing
Waterproof treatment composition is not disclosed by Kotex. Many period-pad manufacturers historically use fluorinated polymers (PFAS-based) for water resistance; without explicit statement otherwise, risk cannot be ruled out.
Unreacted polymer monomers and processing residues
Superabsorbent polymers can retain small amounts of unreacted acrylate monomers or manufacturing additives. No recall or formal complaints on record for Kotex overnight pads, but no independent testing data is publicly available.
Skin irritation from fragrance or antimicrobial additives
Kotex Maxi Overnight is unscented, which reduces fragrance-allergen risk. However, nonwoven webs sometimes include processing chemicals; individual sensitivity reactions have been reported anecdotally in the menstrual-product category, though not specifically linked to this SKU.
Microfiber shedding from degraded backing
If the waterproof backing degrades over time or with improper storage, microfibers could be released into vaginal/perineal tissues. No recalls document this for Kotex, but the risk is inherent to plastic-backed pad design.
Formaldehyde releasers in nonwoven webs
Nonwoven textiles sometimes contain formaldehyde-releasing resins for crease resistance or antimicrobial function. No published data links formaldehyde contamination to Kotex pads; the risk is low but unconfirmed due to lack of disclosure.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% 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 Incontinence Pads & Protection
Tranquility
Personal Care Pads 13.5" x 6.5", 96/Case
Cellulose, wood pulp, absorbent core, adhesives
Lower PFAS concern. Typical absorbent pad with no known treatment.
⚠Risky category by default
Tranquility
Essential Booster Pads Heavy Absorbency, Long - 4-1/4 x 15 Inch (Case of 200)
cellulose/fluff pulp absorbent core with nonwoven layers
Lower concern. Core materials inherently PFAS-free, no evidence of water-repellent coating treatment.
⚠Risky category by default
Kotex
Absorbent Wrapped Liners
Cellulose-based absorbent core, wrapped nonwoven
Lower concern. No known PFAS use in standard absorbent liners.
⚠Risky category by default
More incontinence pads & protection 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.