Laundry Detergents
Laundry detergents (washing powders, liquids and capsules) contain surfactants, usually perfume and, in “biological” products, enzymes that break down stains. Toddler clothes and bedding sit against eczema skin all day and night, so residue matters. NICE CG57 lists soaps and detergents among the irritants clinicians should ask about, and the National Eczema Association names laundry detergent and fragrance among common household irritants. Detergents are part of the irritant arm of Environmental Triggers, not an allergic cause of Atopic Dermatitis.
Laundry Detergents [part-of] Environmental Triggers Laundry Detergents [triggers] Irritant Contact Dermatitis NICE CG57 [relates] Laundry Detergents
Bio vs non-bio: the evidence. Many UK parents switch to non-biological powder first. The only RCT does not support this. Andersen et al. (1998) ran a randomised, double-blind crossover trial in 25 people with atopic dermatitis, with one-month periods on enzyme and non-enzyme detergent. There was no difference in SCORAD, steroid use or symptoms. A 2008 British Journal of Dermatology review (Basketter) found that raw enzyme hazards “do not translate into a risk of skin reactions” at consumer exposure, that investigations of people blaming laundry products showed enzymes were not responsible, and that the belief is “a consequence of a mythology” found uniquely in the UK. Allergy UK likewise says there is no evidence that bio or non-bio powder is better for the skin. The trial was small, short and not in toddlers, so the evidence is moderate rather than strong.
Laundry Detergents [relates] Clothing and Fabrics
Conflict: [Andersen et al., Acta Derm Venereol, 1998; Basketter et al., Br J Dermatol, 2008] say enzyme detergents do not worsen atopic dermatitis. Parents (
evidence: anecdotal, r/toddlers 2024) credit switching to non-bio detergent with clearing a toddler’s flares. Unresolved — the RCT was n = 25, one month, adults/older patients.
Residue and fragrance: what actually helps. Allergy UK advises using less powder and adding an extra rinse cycle to reduce residue, and avoiding fabric conditioner because it contains perfume and binds to fibres, both of which can irritate the skin. The National Eczema Society also suggests a double rinse (see Clothing and Fabrics). Fragrance-free products lower the risk of Fragrance Allergy, which is more common in children with AD. One practical twist: regular emollient use leaves grease in clothes and washing machines, so Allergy UK suggests a monthly empty hot wash with a biological detergent to cut through it. Note that washing does not fully remove emollient build-up from fabric (see Emollient Fire Risk).
Perfumed fabric conditioner and scented detergents
Fragrance residue sits on clothing against inflamed skin all day. Use fragrance-free detergent and skip fabric conditioner for a toddler with eczema.
Laundry Detergents [relates] Fragrance Allergy Laundry Detergents [relates] Emollient Fire Risk
What parents report (evidence: anecdotal). On r/toddlers, one parent said switching to non-bio detergent for clothes and bedding fixed “the massive trigger”, while another said changing soaps, sheets and clothing material had not helped much. On r/eczema, commenters recommend detergents “aimed at allergies”. A simple, low-cost test is to change one thing at a time (fragrance-free, extra rinse, no conditioner) and track flares in a diary.
Connections
- Clothing and Fabrics — bio vs non-bio evidence, source: Andersen 1998; Basketter 2008
- Environmental Triggers — irritant trigger group, source: NICE CG57
- NICE CG57 — soaps and detergents listed as irritants to identify, source: NICE CG57 1.4.1.1
- Fragrance Allergy — perfumed detergents and fabric conditioner, source: Allergy UK; NEA
- Emollient Fire Risk — washing does not fully remove emollient from fabric, source: MHRA DSU
- Irritant Contact Dermatitis — surfactant residue as irritant, source: Allergy UK
- National Eczema Society — double rinse advice, source: NES clothing page