Care guide · FR clothing
Flame-resistant clothing fails silently: a garment that's been washed wrong looks identical to one that will save your skin. The laundering rules exist because two everyday products — fabric softener and bleach — and one everyday substance — the oil the garment picked up at work — can defeat certification the label still claims.
The two chemistries
The washing rules hit the two FR families differently — the split our inherent vs treated guide covers in full. Treated FR (cotton with a flame-retardant finish) is the wash-sensitive one: the treatment is consumed gradually by laundering and rapidly by chlorine bleach, and manufacturers state a wash-life — commonly 50 washes or more — after which certification lapses whatever the garment looks like. Inherent FR (aramids, modacrylics) can't wash out — the polymer itself is flame-resistant — but softener contamination still coats it with fuel, and physical wear still retires it.
Industrial laundering with FR-compatible processes is the gold standard for treated garments precisely because it controls chemistry and counts cycles; home laundering is workable if the three prohibitions are actually observed — which needs telling people, not just assuming.
The rules
| Do | Don't |
|---|---|
| Wash FR with FR, to the label | Mix with household laundry or lint-shedding fleece |
| Use ordinary detergent | Use fabric softener — ever, on any FR garment |
| Pre-treat oil with a degreaser and rewash | Chlorine-bleach stains out of treated cotton |
| Repair with FR thread and FR patches | Sew ordinary patches over protective fabric |
| Track washes on treated garments | Assume a clean-looking garment is still certified |
Retirement
Questions
Softener deposits a waxy film on fibres that is itself flammable — it effectively coats flame-resistant fabric with fuel, and it builds up wash after wash. Every FR care label prohibits it; it's the most common way good FR kit gets quietly compromised at home.
Inherent FR (aramid, modacrylic) has no wash limit — the fibre itself is flame-resistant for the garment's physical life. Treated FR cotton carries a manufacturer-stated wash-life, often 50 industrial washes or more, after which the certification no longer holds. The label or datasheet states it; someone should be counting.
Usually yes, within the label's rules: FR-only loads, plain detergent, no softener, no chlorine bleach, proper degreasing of oil contamination, and drying to the label. Industrial laundering remains the safer option for treated FR because it controls the chemistry and counts the washes — for hydrocarbon-site kit, many employers mandate it.
When care can't bring a garment back to compliance, replace it — certified hi-vis and weatherproofs from stock, with embroidery for teams.