Every garment in your wardrobe carries a small but powerful piece of information sewn into a seam — the care label. These tiny symbols control how clothing should be washed, dried, ironed, bleached, or dry cleaned, and getting them right is essential for any fashion brand selling in the United States or globally.
In this complete guide, we'll decode every symbol in the American ASTM care labeling system, explain the regulations behind them, and show you how high-quality satin labels can elevate your brand from the inside out.
What You'll Find In This Guide
The complete ASTM care symbols reference chart
What Is the ASTM Care Labeling System?
ASTM International (formerly the American Society for Testing and Materials) developed the standardized set of care symbols used across the United States, Canada, and many global markets. The standard — officially known as ASTM D5489 — provides a universal visual language that allows consumers to understand garment care instructions without needing to read text.
Whether you're a boutique designer, an emerging streetwear label, or an established fashion house, using the correct ASTM symbols on your custom clothing labels is both a legal requirement and a mark of professionalism.
The ASTM care symbol system was first published in 1971 and has been refined multiple times to align with international standards. Today, it's recognized across North America and forms the basis for care labels on millions of garments produced every year.
The Legal Side: FTC Care Labeling Rule
In the United States, care labeling isn't optional — it's federal law. The FTC Care Labeling Rule (16 CFR Part 423) requires manufacturers and importers to attach care labels to most textile clothing items sold to consumers.
| Requirement | What It Means |
|---|---|
| Clear Instructions | Provide instructions for at least one safe method of cleaning. |
| Warning Statements | Warn against any care procedure that would harm the garment. |
| Permanent Attachment | Labels must remain attached and legible for the useful life of the product. |
| English Language | Instructions must be in English (symbols may supplement, not replace). |
Failing to comply doesn't just risk FTC fines — it erodes consumer trust and damages your brand's reputation. Premium garment labels are the simplest insurance policy for both compliance and customer satisfaction.
1. Washing Symbols: The Tub Family
Washing symbols all start with the same base shape — a tub icon — that signals water-based cleaning. Variations communicate water temperature, agitation level, and whether machine or hand washing is appropriate.
Machine Wash Symbols Explained
| Icon | Meaning |
|---|---|
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Machine wash — normal cycle is safe. |
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Machine wash, permanent press — reduce wrinkling. |
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Machine wash, gentle or delicate cycle for fragile fabrics. |
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Hand wash only — no machine washing. |
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Do not wash — water-based cleaning will damage the garment. |
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Do not wring — wringing will damage shape or fibers. |
Water Temperature Symbols (30°C to 95°C)
| Icon | Meaning |
|---|---|
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30°C / 80°F (Cold) — delicates and dark colors that can fade. |
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40°C / 105°F (Warm) — the everyday default for most garments. |
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50°C / 120°F (Hand-hot) — moderately soiled items needing extra cleaning power. |
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60°C / 140°F (Hot) — whites, towels, and heavily soiled items. |
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70°C / 160°F (Very Hot) — industrial or sanitizing washes. |
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95°C / 200°F (Boiling) — cottons requiring maximum sanitation. |
2. Bleaching, Drying & Ironing Symbols
Beyond washing, the next three categories — bleaching (triangles), drying (squares), and ironing (iron icons) — each tell a critical part of the care story.
Bleaching Symbols (Triangle Icons)
| Icon | Meaning |
|---|---|
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Any bleach may be used when needed. |
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Only non-chlorine (oxygen-based) bleach is safe. |
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Do not use any bleach — colors or fibers will be damaged. |
Tumble Dry Heat Level Symbols
| Icon | Meaning |
|---|---|
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Tumble dry — any heat setting is safe. |
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Low heat — for delicates and synthetics. |
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Medium heat — the everyday default. |
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High heat — for cottons and durable fabrics. |
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No heat / air dry only — for heat-sensitive garments. |
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Do not tumble dry. |
Air Drying Symbols (Hang, Flat & Drip Dry)
| Icon | Meaning |
|---|---|
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Hang to dry — drape over a line or hanger. |
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Drip dry — hang while still wet without wringing. |
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Dry flat — lay on a towel; essential for knits. |
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Dry in the shade — avoid direct sunlight. |
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Do not dry by any standard method. |
Build a Brand Customers Trust — One Detail at a Time
At smallabel, we manufacture premium satin care labels printed with crystal-clear ASTM symbols — fully compliant with US FTC regulations and international standards. Soft against the skin, durable through hundreds of wash cycles, and tailored to your brand's identity.
Explore Our Custom Satin Labels →3. Ironing & Dry Cleaning Symbols
The final two symbol families address heat-based finishing and professional cleaning — both areas where a single mistake can permanently damage a garment.
Ironing Symbols & Temperature Settings
| Icon | Meaning |
|---|---|
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110°C / 230°F — synthetics like polyester, acrylic, nylon. |
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150°C / 300°F — wool, silk, and most blends. |
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200°C / 390°F — cotton and linen. |
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Iron without steam — steam will damage the fabric. |
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Do not iron at all. |
Dry Cleaning Symbols & Solvent Codes (A, P, F, W)
| Icon | Meaning |
|---|---|
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Dry clean — any standard method is acceptable. |
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Any solvent may be used. |
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Any solvent except trichloroethylene. |
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Petroleum-based solvent only. |
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Professional wet cleaning only. |
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Do not dry clean. |
Why Premium Care Labels Are a Brand Investment
The first thing many shoppers do when picking up a garment is feel the inside. A scratchy, poorly printed care label undermines even the most beautifully crafted clothing — while a soft, cleanly printed satin label communicates premium craftsmanship from the very first touch.
Legal Compliance
Every garment sold in the US, EU, Canada, and Australia must carry accurate care information. Quality labels stay legible wash after wash.
Brand Perception
Premium fabrics deserve premium labels. A satin label printed with crisp, durable symbols signals attention to detail.
Customer Loyalty
Clear care instructions help customers protect their garments — translating directly into positive reviews and repeat purchases.
Frequently Asked Questions
Are care labels legally required in the United States?
Yes. The FTC Care Labeling Rule (16 CFR Part 423) requires care labels on most textile clothing sold in the US. Labels must be permanently attached, written in English, and provide clear instructions for at least one safe cleaning method.
Can I use ASTM symbols instead of written care instructions?
In the United States, written care instructions in English are mandatory under the FTC rule. ASTM symbols can supplement the written text and are highly recommended for international sales — but they cannot fully replace written instructions on US labels.
What does "permanent press" mean on a care label?
Permanent press is a washing machine cycle designed to minimize wrinkling. It uses warm water with a cool-down rinse and a slower spin. The symbol — a tub with one bar beneath it — indicates the garment is suited to this gentler cycle.
Why are some symbols crossed out?
An "X" through any care symbol means that particular care method is prohibited. For example, a tub with an X means do not wash with water; an iron with an X means do not iron. These warnings help prevent permanent damage to delicate garments.
What's the difference between ASTM and ISO care symbols?
ASTM symbols are used primarily in the US and Canada, while ISO 3758 symbols are the international standard used in Europe, Asia, and most other markets. The two systems are very similar — both use the same basic shapes — but differ in some details and requirements.
How do I choose the right care label material for my brand?
Satin labels are ideal for premium garments and delicate fabrics — they're soft against the skin and look luxurious. Cotton labels suit organic and natural product lines. Polyester offers maximum durability for activewear. The right choice depends on your brand positioning, fabric weight, and target customer.
Final Thoughts: The Power of Getting Small Things Right
In fashion, every detail matters — and few details say more about a brand than the quality of its care labels. A well-made label tells your customer that you've thought about their experience long after the sale, that you respect their investment, and that your craftsmanship extends to the parts of the garment they don't even see at first glance.
Whether you're launching your first collection or scaling an established line, treating care labels as a brand investment — not just a regulatory checkbox — is one of the simplest, most effective ways to build trust, protect compliance, and elevate the customer experience.