Health topic
Non-iron shirt alternatives — without formaldehyde
The "non-iron" / "wrinkle-free" finish on cotton dress shirts is typically a formaldehyde-based resin. Formaldehyde is a known human carcinogen and a potent skin sensitizer — that "new shirt smell" on a wrinkle-free dress shirt is often residual off-gassing.
- ·WHO classifies formaldehyde as a Group 1 human carcinogen.
- ·Cotton-poly dress shirts marketed as "non-iron" are the most common offenders.
- ·Linen, untreated cotton, and Tencel/lyocell dress shirts skip the resin entirely.
- ·Wash a new dress shirt twice before first wear to reduce residual formaldehyde.
WHO/IARC Monograph 100F (2012). Formaldehyde — classified as carcinogenic to humans (Group 1).
Untreated dress shirts in our catalog
30 products matching this topic, sorted by Health Impact. Methodology on /health.

Stussy
MATTHEW PLAID SHIRT
100% Tencel

Engineered Garments
Copley Shirt - Multi Color Tencel Jamaican Print
100% Tencel

Engineered Garments
Camp Shirt - Multi Color Tencel Jamaican Print
100% Tencel

Engineered Garments
Camp Shirt - Black/Natural Tencel Floral Print
100% Tencel

Banana Republic
Tencel™-Linen Eyelet Tank
74% Tencel, 26% Linen

tentree
Magnolia Shirt
55% Hemp, 45% Tencel

tentree
West End Shirt
55% Hemp, 45% Tencel

tentree
Sloan Shirt
55% Hemp, 45% Tencel

tentree
Magnolia Shirt
55% Hemp, 45% Tencel

tentree
Dundas Shirt
55% Hemp, 45% Tencel

tentree
West End Shirt
55% Hemp, 45% Tencel

tentree
Sloan Shirt
55% Hemp, 45% Tencel

Club Monaco
Pintuck Bandeau Top
71% Lyocell, 29% Linen

tentree
Dundas Shirt
55% Hemp, 45% Tencel

tentree
Dundas Shirt
55% Hemp, 45% Tencel

tentree
Magnolia Shirt
55% Hemp, 45% Tencel

Club Monaco
Brushed Pima Tee
100% Pima Cotton

Kith
&Kin Tropical Bird Camp Collar Shirt - Sandrift
70% Silk, 30% Lyocell
Madewell
The Blaire Top
100% Linen

Banana Republic
Slim-Fit Linen Shirt
100% Linen

MUJI
Linen Stand Collar Shirt
100% Linen

Uniqlo
Premium Linen Shirt
100% Linen

Needles
Banded Collar Work Shirt - Charcoal - Linen Chambray
100% Linen

Banana Republic
The Everyday Linen Shirt
100% Linen

Banana Republic
Linen Square-Neck Cropped Tank
100% Linen
Madewell
Embroidered Sleeveless Bubble Top in Poplin
100% Linen
Uniqlo JP
Premium Linen Shirt
100% Linen
J.Crew
Garçon classic shirt in Baird McNutt Irish linen
100% Linen

Uniqlo
Premium Linen Skipper Collar 3/4 Sleeve Shirt | Striped
100% Linen
Uniqlo JP
Premium Linen Shirt / Stripe
100% Linen