What makes a mattress hypoallergenic: materials, certifications and the evidence

The short answer

Nobody defines a “hypoallergenic mattress”. The Asthma & Allergy Friendly program’s own pages say generic “hypoallergenic” claims have no legal definition, so on a listing the word is the maker’s description. What the health bodies we read describe is different: house dust mites, and the proteins in their droppings, living in bedding. The NIEHS and AAFA recommend allergen-impermeable covers on mattresses and pillows, weekly hot washing of bedding and humidity control. We found no source that names a mattress brand, material or construction as the answer, and this page does not name one. We work from documents and have not tested any product. For the word itself, see what hypoallergenic means.

What the evidence points at: mites in the bed

The NIEHS says dust mites live in mattresses, bedding, upholstered furniture, carpets and curtains, and feed on dead skin. Allergy UK says that in people allergic to dust mite it is often proteins in the droppings, not the mite, that cause symptoms, and that a significant share of exposure happens in bed. Our guide to dust mites and bedding sets this out.

The mattress itself is a large reservoir. A 2002 New Zealand study (PMID 12033480) sampled 65 duvets, 81 pillows and 65 mattresses in 34 households. Mattresses had the highest levels, a geometric mean of 53.8 micrograms of Der p 1 per gram of dust, and mattresses over 10 years old were higher still. The authors concluded that advising mite-sensitised people to use synthetic bedding does not prevent exposure. That is a dust measurement from one country, not a symptom study, and it does not compare mattress types.

Materials: what the sources do and do not say

Latex. We found no source on mite allergen in latex mattresses. The AAAAI describes latex as sap from rubber trees and says avoiding latex is the only way to prevent a reaction in a person with a latex allergy. Its page does not mention mattresses, and we found no source on how much latex protein remains in a finished mattress. One maker record on this site, a latex mattress topper, states GOLS-certified organic Dunlop latex; see below.

Wool. No source we read calls wool bedding hypoallergenic. Three older studies bear on mites. In the Melbourne study (PMID 9058687, 1997), Der p 1 on the surface of wool and sheepskin mattress coverings was several times higher than on cotton, and far higher than on impermeable encasements (0.4 micrograms per gram of fine dust). The Wellington study (PMID 9678840) found bedding levels higher in beds with wool underlays, kapok or inner-sprung mattresses, and a south-eastern Australian survey (PMID 9860238) associated higher bed allergen with wool bedding and inner-spring mattresses. These are correlations, with humidity and mattress type moving alongside wool, and none tested a modern wool mattress. Lanolin contact allergy is a separate issue; our wool guide covers both.

Polyurethane foam, memory foam. No source found on mite allergen or allergy in foam mattresses.

Innersprings. The Wellington and Australian studies above associated inner-spring mattresses with higher bed allergen, alongside wool and humidity. The abstracts do not say whether newer pocketed-coil designs differ, and we found nothing on that.

The mite-allergen findings, then, are about what covers the sleeper and how old and humid the bed is, not about a winning core material.

Certifications: what each covers

• Asthma & Allergy Friendly (run by Allergy Standards Limited, with AAFA as US partner). The standards list names mattress encasings, mattress covers and mattresses. For a mattress, the stated principle is that it incorporates a layer acting as an effective barrier to allergen entering it. For covers it adds breathability, washability and a dust mite allergen accumulation test. The published pages give no numeric limits or pass marks for bedding. See the program explained and how to read the label.
• OEKO-TEX STANDARD 100. OEKO-TEX describes it as a label for textiles tested for harmful substances, with limit values by product class. The pages we read do not mention allergens or dust mites, so it answers a chemistry question, not a mite question. See what it means.
• GOTS and GOLS. Appear on this site only as a maker’s own wording (GOTS organic textile and GOLS organic latex on the Avocado records). We did not read either standard and did not check any certificate, so we do not say what they test.

Covers and encasements versus a new mattress

We found no study that compares buying a new mattress with covering the one you have. What exists concerns covers.

• One lab study (PMID 9949312, 1999) tested fabrics from manufacturers and catalogues and reported that dust mite allergens were blocked below detectable limits by fabrics under 10 micrometres in pore size. It is one study’s finding, not a standard, and it does not cover seams, zips or washing. See the pore-size explainer.
• A 2003 randomised trial (PMID 14656350) in mite-sensitised adult asthmatics found no significant difference in final Der p 1 and no effect on peak flow or symptoms; the authors said impermeable bedding alone cannot be recommended for relieving asthma symptoms in that group.
• A trial in young children (PMID 12153962) found less night cough in the second year of life with active covers (adjusted odds ratio 0.65; 95% CI 0.4 to 1.0), and no effect on other respiratory symptoms, eczema or sensitisation.
• A 2025 systematic review (PMID 40774466) found high heterogeneity and only three high-quality studies, and called mite-impermeable covers promising.

AAFA adds that dust mites can still live in bedding even when the mattress and pillows are covered, and the EPA and NIEHS include hot washing (130 degrees F or more) and humidity of 30 to 50 percent, at most 50 percent for NIEHS, as part of the routine. Whether any of this helps a particular person is a question for a doctor or allergist.

What to check on a mattress listing

1. Who says it? “Hypoallergenic” with no named certifier is the maker’s word.
2. Is a certifier named, with a number? OEKO-TEX offers a Label Check; the Asthma & Allergy Friendly program has a certified-products finder. Treat a badge on a retail page as the seller’s claim until you confirm it.
3. What does the mark cover? A textile-chemistry mark and an allergen-barrier mark are different things, and a certificate may cover one component, not the whole mattress.
4. Is there a stated mite barrier? Look for a named barrier layer, cover or test, not just “mite-proof”.
5. Which layer carries the claim? A word applied to the wool layer is not a statement about the whole mattress.
6. Do you have a latex or wool concern? Check the material list and ask an allergist; the sources we read do not address either inside a finished mattress.
7. What about the rest of the bed? Add a cover, washable bedding and humidity control, which is where the health bodies put the weight.

On this site: protectors and toppers

Our records for items that touch a mattress are protectors and toppers, each a maker page read in November 2026. The mattress protector roundup holds, with their evidence level and date: the Avocado Organic Waterproof Mattress Protector (maker, 13 November 2026; meets our criteria, the maker doesn’t call it hypoallergenic), the Coop Home Goods Ultra-Tech and Parachute Cotton protectors (maker-browser; meets our criteria, the maker doesn’t call it hypoallergenic), the TEMPUR-Protect (maker, 13 November 2026; same label) and the Purple Waterproof Mattress Protector (maker, 13 November 2026; the maker calls its fabric hypoallergenic). None of these records states a pore size or a mite-barrier test, so none shows it meets the figure in the lab study above.

The mattress topper roundup covers the Avocado Organic Latex Mattress Topper (maker-browser, 14 November 2026; meets our criteria, the maker doesn’t call it hypoallergenic) and the Parachute Down Alternative Topper (maker-browser, 13 November 2026; the maker uses hypoallergenic wording with no test or standard stated). For makers, see is Avocado hypoallergenic and is Purple hypoallergenic. The wider category is in hypoallergenic bedding, pillow protectors and pillow fill types. Stricter bedding situations are in the nursery bedding and dorm bedding guides.

What we could not verify

We hold one mattress record that was verified at all: Parachute The Mattress, which the maker page describes as foam-free, made with Pure New Zealand wool, certified organic cotton and pocketed steel coils. The maker’s page states “Pure New Zealand Wool: This natural, sustainable material is hypoallergenic”. The captured text shows no OEKO-TEX or Asthma & Allergy Friendly certification and no mite-barrier statement. We report this as a maker’s wording, not as a finding, and we do not recommend the mattress. Two other mattress records did not hold up on a second read, so they are not recommended or rejected. For any question about your own allergy, ask a clinician or an allergy society.