The best laundry detergent for sensitive skin is fragrance-free and dye-free, ideally with independent testing such as the Allergy UK Seal of Approval. Many people with eczema also prefer non-bio. How you wash matters just as much: use less detergent than you think you need, add an extra rinse, and skip fabric conditioner. Those three habits remove most of the residue that sits against your skin.
If your skin itches where clothes touch it, at the waistband, collar, armpits or behind the knees, your laundry routine is worth checking. The fix is usually simpler than people expect, and it rarely involves an expensive specialist product. For the wider routine, see our main guide to fresh, clean laundry in the UK.
Signs Your Detergent Could Be the Problem
Rash Where Fabric Sits Tight
Redness or itching along waistbands, collars, bra straps and sock lines points to something left in the fabric.
It Started After a Switch
A new detergent, conditioner or scent booster shortly before the rash appeared is a strong clue.
Worse at Night
Bedding and pyjamas are in contact with skin for hours, so residue on them has the biggest effect.
Better on Holiday
If your skin improves when you wear clothes washed elsewhere, your home routine is likely involved.
Laundry is not always the cause. Wool, heat, sweat and an eczema flare can all produce similar symptoms, so change one thing at a time.
Buying Checklist for Sensitive Skin
| Look for | Why |
|---|---|
| Fragrance-free | Fragrance is one of the most common causes of skin allergy. "Unscented" is not the same and may contain masking fragrance. |
| Dye-free | Colourings do nothing for cleaning and add another possible irritant. |
| Non-bio, if you prefer | There is no scientific evidence that enzymes worsen eczema, but many people with eczema find non-bio suits them. |
| Independent testing | An Allergy UK Seal of Approval means independent testing. "Dermatologically tested" alone tells you little about the result. |
| Liquid for cool washes | Liquids dissolve fully at low temperatures, leaving less residue than powder. |
| No built-in softener | Two-in-one "with softener" products add conditioner that is designed to stay in the fabric. |
Allergy UK's list of approved products includes laundry ranges such as Surcare and Ecover Zero, which are fragrance-free. Supermarket fragrance-free non-bio liquids are another widely available option. Whatever you choose, give it two to three weeks before judging the result.
Bio or Non-Bio for Sensitive Skin?
Fragrance matters more than enzymes. If you currently use a scented bio detergent, switching to a fragrance-free one is the first step; switching to non-bio is the second, if needed. Our comparison of bio vs non-bio detergent explains what each enzyme does and which loads benefit from them.
How to Wash Clothes for Sensitive Skin
The National Eczema Society recommends several simple changes to the way you wash:
- Use less detergent. Start below the pack's recommended dose; excess detergent is what stays in fabric.
- Add an extra rinse. Most machines have a rinse-plus or extra-rinse option.
- Skip fabric conditioner. It is designed to bind to fibres and is usually fragranced.
- Do not overload the drum. Clothes need room to rinse properly.
- Wash new clothes before wearing them to remove excess dye and finishing chemicals.
- Run a monthly empty hot wash. If you use emollients, this stops them building up inside the machine.
When to Get Advice
See a Pharmacist or GP If
The rash does not settle within a couple of weeks of changing your laundry routine, the skin is broken, weeping, very painful or spreading, or there are signs of infection such as heat, swelling or yellow crusts. A GP can refer you for patch testing if an allergy to a specific ingredient is suspected. For babies and young children with a rash, speak to a health visitor, pharmacist or GP.
Quick Summary
- Choose fragrance-free and dye-free first; non-bio second if needed.
- Look for independent testing such as the Allergy UK Seal of Approval.
- Use less detergent, add an extra rinse and skip fabric conditioner.
- Wash new clothes and bedding before use.
- Persistent or broken skin needs a pharmacist or GP.
Shop Laundry Care
Laundry essentials, stain removers and storage for a gentler washing routine.
Shop Laundry CareFrequently Asked Questions
What laundry detergent is best for eczema?
A fragrance-free, dye-free detergent, ideally independently tested. Many people with eczema prefer non-bio. Using less detergent and adding an extra rinse helps as much as the product itself.
Is non-bio better for sensitive skin?
Some people find it is, but the National Eczema Society says there is no scientific evidence that biological enzymes make eczema worse. Fragrance is a more common trigger.
Can fabric conditioner cause skin irritation?
Yes, for some people. Fabric conditioner is designed to stay in the fibres and is usually fragranced, so it is one of the first things to drop if your skin reacts.
Can laundry detergent cause a rash?
It can. Leftover detergent or fragrance can cause irritant or allergic contact dermatitis, usually where clothing fits closely. Changing products and rinsing better often settles it.
How long does a detergent rash take to clear?
Mild irritation often improves within days of removing the trigger, but it can take a couple of weeks. If it does not improve, or the skin is broken, see a pharmacist or GP.
Do I need to rewash everything after switching detergent?
Start with bedding, towels, underwear and anything worn close to the skin, using the new detergent and an extra rinse. Other clothes can switch over as they are worn and washed.
Sources: National Eczema Society, Household irritants and eczema and FAQs; Allergy UK, Approved products.