What causes the chemical smell on new clothes?

The smell comes from formaldehyde resins, volatile organic compounds (VOCs), and finishing agents used during manufacturing. Formaldehyde is applied to prevent wrinkles and mildew during shipping. Other chemicals include azo dyes, flame retardants, and anti-mould treatments. These off-gas at room temperature, producing the distinctive 'new clothes' smell.

Is it dangerous to wear new clothes without washing them first?

It's not immediately dangerous for most people, but it's not advisable. New clothes can contain formaldehyde levels up to 900 ppm — well above the 75 ppm limit set by most countries that regulate it. Prolonged skin contact can cause contact dermatitis, respiratory irritation, and allergic reactions. Washing removes 60-80% of residual chemicals.

Does the US regulate formaldehyde in clothing?

No. The United States has no legal limit on formaldehyde in clothing. At least 13 other countries — including Japan, China, Australia, and the entire EU — have enforceable limits ranging from 16 to 300 ppm depending on the garment type and intended wearer. Children's clothing typically has the strictest limits.

How do you get the chemical smell out of new clothes?

Wash the garment before first wear — this removes 60-80% of residual chemicals. For stubborn smells, soak in a baking soda solution (1/2 cup per basin) for 30 minutes before washing. Air-drying outdoors helps dissipate remaining VOCs. For very strong smells, a second wash may be needed. White vinegar in the rinse cycle can also help neutralise chemical residues.

Which types of clothing have the most chemicals?

Wrinkle-free and no-iron garments contain the highest levels of formaldehyde (up to 900 ppm). Dark-coloured synthetics contain more disperse dyes. Heavily branded fast fashion often uses more finishing chemicals to maintain appearance during shipping. Children's sleepwear treated with flame retardants is another high-chemical category.

Why Do New Clothes Smell Like Chemicals? (And Is It Dangerous?)

You open a package of new clothes and get hit with that unmistakable chemical smell. Sharp, synthetic, vaguely industrial. Most people ignore it. Some actually like it — it smells "new." But that smell is your clothes off-gassing chemicals directly into the air you breathe, and onto the skin you're about to press them against.

Here's what's actually causing it, whether it's harmful, and why the US is one of the only developed nations that doesn't regulate it.

What You're Actually Smelling

The "new clothes" smell is a cocktail of volatile organic compounds (VOCs) that evaporate from fabric at room temperature. The primary culprits:

Formaldehyde resins — applied to fabric to prevent wrinkles, resist mildew, and maintain shape during weeks of shipping from factory to store. This is the biggest contributor to the chemical smell.
Azo dyes and disperse dyes — synthetic colourants that can release aromatic amines. Darker colours contain higher concentrations.
Anti-mould agents (DMF) — dimethyl fumarate sachets are often placed in shoe boxes and clothing packages to prevent mould during ocean freight.
Flame retardants — applied to children's sleepwear and some home textiles.
Nonylphenol ethoxylates (NPEs) — surfactants used in dyeing and washing processes during manufacturing.

These aren't trace amounts. A 2024 study testing garments from major retailers found formaldehyde levels ranging from 20 ppm to over 900 ppm — with "wrinkle-free" and "no-iron" garments consistently at the top.

The Formaldehyde Problem

Formaldehyde is classified as a Group 1 carcinogen by the International Agency for Research on Cancer (IARC). It's the same chemical used to preserve biological specimens. And it's in your shirts.

0 ppm

US legal limit on formaldehyde in clothing (there isn't one)

75 ppm

EU limit for clothing worn against skin

16 ppm

Japan's limit for infant clothing — the world's strictest

At least 13 countries regulate formaldehyde in textiles: Japan, China, South Korea, Australia, New Zealand, and all EU member states. The US is not among them. There is no federal standard, no required testing, and no labelling requirement.

What does this mean in practice? A shirt sold in Tokyo must test below 75 ppm of formaldehyde for adults (16 ppm for infants). That same shirt can be sold in New York with 900 ppm and no disclosure.

Health Effects: What the Research Shows

Short-term exposure to formaldehyde and VOCs from clothing can cause:

Skin reactions — contact dermatitis, redness, itching, and rashes, particularly in areas where fabric presses against skin (waistbands, collars, underarms)
Respiratory irritation — sore throat, coughing, and nasal irritation from inhaling off-gassed formaldehyde
Eye irritation — burning or watering eyes, especially when trying on clothes in poorly ventilated stores or unboxing online orders
Allergic sensitisation — repeated exposure can develop into a persistent allergy to formaldehyde, affecting an estimated 2-3% of the population

People most at risk include infants and children, pregnant women, people with eczema or sensitive skin, and textile industry workers who handle unwashed garments daily.

Which Garments Are Worst?

Garment type	Typical formaldehyde level	Risk level
Wrinkle-free / no-iron shirts	300–900 ppm	High
Dark synthetic garments	200–500 ppm	High
Printed fast-fashion items	100–400 ppm	Moderate
Conventional cotton basics	20–100 ppm	Low–moderate
Organic/OEKO-TEX certified	<16–75 ppm	Low
Untreated linen or silk	<20 ppm	Very low

The pattern is clear: the more processing a garment undergoes, the more chemicals it carries. "Performance" finishes — wrinkle-resistance, stain-proofing, permanent press — almost always involve formaldehyde-based resins.

How to Protect Yourself

Always wash before wearing

A single wash removes 60-80% of residual formaldehyde and most water-soluble finishing chemicals. This is the single most effective thing you can do. Use warm water and a fragrance-free detergent.

Choose lower-chemical fabrics

Natural fibres like linen, silk, and organic cotton require fewer finishing chemicals. Untreated, undyed natural fabrics carry the lowest chemical loads.

Look for certifications

OEKO-TEX Standard 100 tests for over 350 harmful substances including formaldehyde, heavy metals, and pesticides. GOTS (Global Organic Textile Standard) covers both organic fibre content and chemical processing limits. These aren't marketing labels — they involve independent lab testing. See our full certifications guide for more detail.

Avoid "wrinkle-free" and "no-iron" labels

These are the biggest red flags. The finish that prevents wrinkles is almost always a formaldehyde-based resin. If you need crisp shirts, buy untreated cotton and iron them — it takes two minutes and skips the carcinogen.

Air out new purchases

If you can't wash immediately, hang new clothes outdoors or in a well-ventilated room for 24-48 hours. This allows the most volatile chemicals to off-gas before the garment touches your skin.

The Bigger Picture

The chemical smell on new clothes is a symptom of a larger problem: the textile industry uses over 15,000 different chemicals in manufacturing, and most countries don't require brands to disclose which ones end up in the finished product. The US regulates chemicals in food, cosmetics, and household products — but not in the clothes pressed against your skin for 16 hours a day.

Until regulation catches up, the responsibility falls on consumers. The simplest rules: wash everything before wearing, choose natural fibres when possible, and look for OEKO-TEX or GOTS certification on anything that will sit against your skin.