Nobody wants to think about harmful chemicals when they are shopping for their child's clothes. You pick up a cute dress or a cheerful printed t-shirt, check the size, check the price, and put it in your cart. The fabric feels soft. The colours are bright. It looks perfectly fine.
But the truth is that conventional textile manufacturing — including much of what is produced and sold in India — routinely uses chemicals that have documented health risks. Most of these chemicals are invisible, odourless, and not listed on the garment label. Unless you know what to look for, there is no way to tell whether a particular item contains them.
This is not about creating panic. It is about giving you the knowledge to make informed choices. Here are five chemicals commonly found in children's clothing, what they do, and how to avoid them.
1. Formaldehyde
What It Is
Formaldehyde is a chemical compound used extensively in textile finishing. In clothing, it is applied as a resin to make fabrics wrinkle-resistant, maintain shape, and prevent mildew during shipping and storage. You know that distinct "new clothes smell" that some garments have straight off the rack? That is often formaldehyde.
Where It Is Found
Formaldehyde-based resins are most commonly found in:
- Wrinkle-free or "easy care" clothing
- Stiff, structured garments (collared shirts, formal wear)
- Clothing labelled "non-iron" or "permanent press"
- Imported clothing that has been treated to prevent mildew during long shipping times
Health Risks
Formaldehyde is classified as a Group 1 carcinogen by the International Agency for Research on Cancer (IARC). At levels found in clothing, the primary concerns are:
- Skin irritation: Contact dermatitis, rashes, itching — especially in skin folds and areas of friction
- Respiratory irritation: The chemical off-gasses from fabric, which can irritate airways — a concern for children with asthma
- Allergic sensitisation: Repeated exposure can cause the body to develop a formaldehyde allergy, making reactions progressively worse over time
The European Union limits formaldehyde in clothing to 20 ppm (parts per million) for items worn by children under 3, and 75 ppm for items worn against skin. India has no mandatory limits. Studies have found formaldehyde levels exceeding 500 ppm in some garments sold in Indian markets.
How to Avoid It
- Choose GOTS-certified organic cotton — formaldehyde is completely banned under GOTS
- Avoid "wrinkle-free," "easy care," or "non-iron" labels
- Wash all new clothes at least once before wearing — this removes some (but not all) formaldehyde
- Choose naturally wrinkled fabrics like linen or soft cotton that do not need chemical treatments
2. Azo Dyes
What They Are
Azo dyes are the most widely used class of synthetic dyes in the textile industry, accounting for over 60% of all dyes used worldwide. They are popular because they are cheap, easy to apply, and produce vibrant colours across the full spectrum.
The problem is that certain azo dyes can break down and release aromatic amines — some of which are classified as carcinogenic or mutagenic. Not all azo dyes are harmful (there are thousands of varieties), but the dangerous ones are still widely used in countries with weak enforcement.
Where They Are Found
- Brightly coloured clothing, especially reds, oranges, and yellows
- Dark-coloured clothing (black, navy, dark brown)
- Cheap, mass-produced clothing where dye cost is a major factor
- Clothing that bleeds colour heavily in the first few washes
Health Risks
- Skin allergies: Contact dermatitis, particularly from dye that transfers to skin when wet (from sweat or rain)
- Carcinogenic amines: Some azo dyes release amines like benzidine, which are known carcinogens. The risk is from prolonged, repeated skin contact
- Environmental damage: Azo dyes in wastewater are toxic to aquatic life and are a major pollutant in India's textile manufacturing hubs
The EU banned 22 specific aromatic amines from azo dyes in clothing sold in Europe. India's Bureau of Indian Standards (BIS) has guidelines but enforcement is inconsistent, particularly for domestically sold products.
How to Avoid Them
- Choose GOTS-certified clothing — all azo dyes that release harmful amines are banned
- Be cautious with very cheap, very brightly coloured clothing from unknown brands
- If clothes bleed colour excessively when washed, that is a red flag for cheap dye
- For the most sensitive children, lighter colours and undyed organic cotton are the safest bet
3. Phthalates
What They Are
Phthalates are a group of chemicals used as plasticisers — they make plastics soft and flexible. In children's clothing, they are primarily found in printed designs that use plastisol (PVC-based) ink. That rubbery, slightly raised print on a t-shirt? Likely contains phthalates.
Where They Are Found
- Plastic-feel prints on t-shirts (screen-printed with plastisol ink)
- Iron-on transfers and decals
- PVC elements on clothing (shiny patches, plastic decorations)
- Some synthetic leather or faux leather trims
- Plastic buttons and snaps (lower risk, as they are not against skin for large areas)
Health Risks
Phthalates are endocrine disruptors — they interfere with the body's hormonal system. In children, this is a particular concern because their endocrine systems are still developing. Research has linked phthalate exposure to:
- Disruption of reproductive development
- Hormonal imbalances
- Increased risk of asthma and allergies
- Potential impact on neurodevelopment
The exposure route from clothing is primarily through skin absorption and, in the case of younger children, mouthing of fabric.
How to Avoid Them
- Choose clothing with water-based prints rather than plastisol (the print will feel softer and more integrated with the fabric, rather than sitting on top like a rubbery layer)
- GOTS certification bans PVC and phthalates in prints, labels, and accessories
- Opt for embroidered designs or woven patterns instead of printed graphics
- Avoid clothing with PVC or "patent leather" decorative elements
4. Flame Retardants
What They Are
Chemical flame retardants are applied to textiles to reduce flammability. In some countries (notably the US and UK), children's sleepwear is required to meet specific flammability standards, which has historically been achieved through chemical treatments. India does not have mandatory flame retardancy requirements for children's clothing, but imported sleepwear may contain these chemicals.
Where They Are Found
- Imported children's sleepwear (especially from countries with flammability regulations)
- Some synthetic fabrics (polyester, nylon) that are treated for flame resistance
- Costume clothing and dress-up outfits (often made from cheap synthetics)
Health Risks
Many chemical flame retardants are now known to be harmful:
- Endocrine disruption: Similar to phthalates, many flame retardants interfere with thyroid function and hormonal development
- Neurodevelopmental effects: Some studies link flame retardant exposure to reduced IQ and attention problems in children
- Carcinogenic potential: Several flame retardant compounds are classified as possible or probable carcinogens
- Bioaccumulation: These chemicals build up in the body over time, as they are not easily metabolised or excreted
How to Avoid Them
- For sleepwear, choose snug-fitting organic cotton (tight fit inherently reduces flammability risk without chemicals)
- Avoid synthetic sleepwear that is labelled "flame resistant" unless you can verify the method
- GOTS-certified sleepwear does not contain chemical flame retardants
- Be particularly cautious with cheap costume clothing and dress-up outfits from unregulated sources
5. Heavy Metals
What They Are
Heavy metals — including lead, cadmium, chromium, mercury, nickel, and antimony — enter clothing through dyes, pigments, mordants (chemicals that fix dye to fabric), metal accessories, and certain finishing processes.
Where They Are Found
- Dyes and pigments: Lead and chromium are used in some cheap dyes, particularly for bright colours
- Metal accessories: Buttons, snaps, zippers, and decorative metal elements may contain nickel, lead, or cadmium
- Printed designs: Some printing inks contain heavy metals as colorants
- Anti-microbial treatments: Some "anti-bacterial" clothing treatments use silver or other metals
Health Risks
- Lead: Toxic to the nervous system, especially in children. Even low levels affect brain development, learning, and behaviour
- Cadmium: Toxic to kidneys and bones. Classified as a Group 1 carcinogen
- Chromium (hexavalent): Causes allergic contact dermatitis and is a known carcinogen when inhaled
- Nickel: One of the most common causes of allergic contact dermatitis. Metal buttons and snaps on clothing are a frequent source of nickel allergy in children
How to Avoid Them
- Choose GOTS-certified clothing — heavy metals in dyes and accessories are strictly limited
- If your child develops a rash around a metal snap or button, switch to garments with fabric-covered or plastic fastenings
- Be cautious with heavily decorated or embellished children's clothing from unknown brands
- OEKO-TEX Standard 100 certification also tests for heavy metals in finished products
The Cumulative Effect
It is important to understand that the concern with these chemicals is not usually about a single exposure. It is about cumulative, daily exposure over months and years. Your child wears clothes every day, sleeps in fabric every night, and (especially when young) regularly mouths fabric. Each individual garment might contain only trace amounts of these chemicals. But when you add up all the garments, all the hours of wear, and all the wash cycles that fail to completely remove chemical residues, the total exposure adds up.
This is what toxicologists call the "body burden" — the total load of chemicals in the body at any given time. Children have a higher body burden relative to their body weight than adults, because they are smaller but encounter proportionally similar environmental exposures.
Reducing chemical exposure from clothing is one of the most practical steps you can take to lower your child's body burden. It is not about perfection — it is about making better choices where you can.
Your Practical Action Plan
You do not need to throw away your child's entire wardrobe tomorrow. Here is a sensible, gradual approach:
- Prioritise what touches skin most. Replace innerwear, sleepwear, and everyday basics with GOTS-certified organic cotton first.
- Wash everything new. At minimum, wash all new clothing once before your child wears it. Use a mild, fragrance-free detergent.
- Read labels. Learn to spot red-flag terms like "wrinkle-free," "easy care," and "flame resistant." Our guide to GOTS certification will help you identify safe alternatives.
- Choose wisely for prints. Water-based prints over plastisol. Embroidery over transfers. Simpler is often safer.
- Trust your nose. A strong chemical smell from new clothing is not normal. If a garment smells strongly of chemicals, return it or wash it multiple times before use.
- Buy from transparent brands. Brands that share their certification details, supply chain information, and material sourcing are more likely to take chemical safety seriously.
For the full picture on organic cotton and why it avoids all five of these chemical categories, read our Complete Guide to Organic Cotton Kids Clothing in India.
