What fabric is best for eczema?

100% cotton (preferably organic, untreated) is the most widely recommended fabric for eczema by dermatologists. It's soft, breathable, absorbs moisture, and rarely causes irritation. Silk and Tencel are also excellent — silk has natural hypoallergenic properties and Tencel's ultra-smooth surface minimises friction. Avoid polyester, wool (unless superfine merino), and any fabric treated with chemical finishes.

Can polyester cause skin irritation?

Yes. Polyester can irritate skin in three ways: (1) it traps heat and moisture, creating conditions for heat rashes and bacterial growth; (2) the chemical finishes applied to polyester (formaldehyde resins, disperse dyes, PFAS) are known contact allergens; (3) the fibre texture creates more friction against skin than natural alternatives. If you have unexplained rashes or itching, your polyester clothing is a likely culprit.

Is bamboo fabric good for sensitive skin?

Bamboo fabric (usually bamboo viscose or bamboo lyocell) is generally gentle on sensitive skin — it's smooth, breathable, and moisture-wicking. However, bamboo viscose is chemically processed and may retain trace chemicals that could irritate highly reactive skin. Bamboo lyocell (closed-loop processing) is the safer option. Both are better than polyester but not as proven as cotton for eczema-prone skin.

Best Fabrics for Sensitive Skin (Eczema, Allergies & Irritation)

If you've ever pulled on a new shirt and immediately felt itchy, developed a rash overnight from a dress, or noticed your eczema flaring after wearing certain clothes — the fabric is probably the problem.

Not all fabrics are created equal when it comes to skin contact. Some are naturally gentle, breathable, and hypoallergenic. Others are basically irritant delivery systems pressed against your largest organ.

The Best Fabrics for Sensitive Skin

1. Cotton (Organic, Untreated)

Cotton is the most recommended fabric for sensitive skin by dermatologists worldwide, and for good reason:

Soft and smooth — minimal friction against irritated skin
Breathable — prevents heat and moisture buildup that triggers flares
Absorbent — pulls sweat away from skin surface
Hypoallergenic — the fibre itself virtually never causes allergic reactions
Machine washable at high temperatures — kills dust mites and bacteria

Go organic when possible. Organic cotton is grown without pesticide residues and processed with fewer chemicals. For eczema and highly reactive skin, this matters — trace chemical residues in conventional cotton processing can occasionally trigger reactions in extremely sensitive individuals.

2. Silk

Silk is naturally hypoallergenic and has properties that actively benefit sensitive skin:

Sericin — a protein in silk that some studies suggest has antimicrobial and anti-inflammatory properties
Incredibly smooth surface — almost zero friction against skin
Temperature-regulating — keeps skin at a comfortable temperature year-round
Moisture-managing — absorbs perspiration without creating a damp layer

Dermatologists sometimes recommend silk clothing specifically for eczema patients, particularly for sleepwear where prolonged skin contact occurs.

3. Tencel / Lyocell

A newer fabric with excellent skin-friendly properties:

Ultra-smooth fibre surface — smoother than cotton, reducing friction and irritation
Superior moisture management — absorbs 50% more moisture than cotton
Closed-loop production — minimal chemical residues in the final fabric
Naturally inhibits bacterial growth — keeps the skin microbiome balanced

Particularly good for underwear, base layers, and sleepwear — anywhere fabric sits directly against sensitive areas.

4. Fine Merino Wool (With Caution)

Traditional wool is itchy and terrible for sensitive skin. But superfine merino (under 18.5 microns) is different:

Fibres are so fine they bend rather than poke the skin
Naturally antimicrobial — reduces bacterial triggers
Excellent moisture absorption without feeling wet
Some clinical studies show benefits for eczema when worn as a base layer

Important: Only superfine merino. Standard wool (over 25 microns) will irritate sensitive skin. And some people with eczema react to all animal fibres — patch test first.

Fabrics to Avoid with Sensitive Skin

Polyester and Synthetics

Polyester is problematic for sensitive skin on multiple levels:

Traps heat and moisture — creates the warm, damp conditions that trigger eczema flares and heat rashes
Chemical finishes — formaldehyde resins (wrinkle-resistance), disperse dyes, and PFAS (stain resistance) are all known skin sensitisers
Bacterial breeding ground — bacteria proliferate 5x faster on polyester, disrupting the skin microbiome
Static charge — creates friction and cling that irritates reactive skin

Coarse Wool

Standard wool fibres are thick and don't bend — they poke into the skin surface and cause mechanical irritation. This isn't an allergy; it's a physical response to being stabbed by thousands of tiny fibres.

Heavily Dyed or Treated Fabrics

Dark colours and vibrant prints require more dye, which means more chemical residue. "Easy care", "wrinkle-free", and "stain-resistant" treatments all add chemicals that can trigger contact dermatitis.

Practical Guidelines

Wash new clothes before wearing. This removes some (not all) chemical residues from manufacturing.
Choose light colours. Less dye = fewer potential irritants.
Avoid "easy care" labels. This means chemical treatment, usually formaldehyde-based.
Check fabric composition carefully. "Cotton blend" might be 50% polyester.
Loose fit over tight. Reduces friction and allows airflow around sensitive areas.
Prioritise sleepwear. You spend 8 hours in contact with these fabrics — make them count.

The Simple Rule

For sensitive skin: cotton, silk, or Tencel against your skin. Always. Avoid polyester and any chemically-treated fabric. Check composition before buying — not after your skin reacts.