How to Wash Jeans

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The short version: Cold water, inside-out, no dryer, every 5–10 wears.

Jeans are designed to be worn multiple times between washes. The main enemies are hot water, the dryer, and washing too frequently. Here is how to keep them looking good for years.

How Often to Wash by Denim Type

Regular dark denim

Every 5–10 wears

Denim is woven tightly enough to resist most surface dirt. Frequent washing fades the indigo dye and stresses the denim fibres unnecessarily.

White or light denim

Every 2–3 wears

Light colours show soil and skin transfer far more quickly. More frequent washing is needed but still less than everyday garments.

Raw (unwashed) denim

After 6+ months of wear

Raw denim enthusiasts often wear new jeans for 6 months before the first wash to develop a personalised fade pattern. First wash by hand in cold water only.

Stretch denim (elastane blend)

Every 3–5 wears

Elastane loses stretch over time with wear. Washing actually helps restore it by relaxing the fibres. Do not over-wash though — hot water degrades elastane.

How to Machine Wash Jeans

1
Turn inside out
The outside surface of the denim takes all the friction and heat damage in the wash cycle. Turning inside-out protects the visible surface from fading and abrasion. Do this every single wash.
2
Cold water only
Wash jeans at 30°C maximum — ideally in a cold wash (20°C). Hot water opens denim fibres, allowing dye to leach out faster, and causes shrinkage. Even pre-shrunk jeans can shrink further at 40°C or above.
3
Delicate or jeans cycle
Use a gentle cycle with a slow spin. High-speed spinning stresses the denim weave and can create distortion at pockets and waistbands. Most machines have a jeans-specific programme — use it.
4
Use minimal detergent
Use half the recommended detergent dose. Excess detergent leaves residue in denim that attracts dirt and causes faster soiling. A small amount of dark-fabric detergent (designed to protect dye) works well.
5
Wash alone or with similar dark items
New dark denim bleeds indigo heavily, especially for the first 3–4 washes. Wash alone or with other dark items to avoid dyeing lighter garments. Never wash dark jeans with white or light fabrics.
6
Air dry — never the dryer
Hang jeans by the waistband to air dry. Turn them right-side out for drying so the outer surface gets air exposure. Tumble drying causes significant shrinkage and fading, and the heat degrades denim fibres over time.

Drying Jeans Correctly

Hang by the waistband

Use a trouser hanger or the waistband loops. This prevents the weight of wet denim from stretching the legs out of shape.

Reshape while damp

While the jeans are still damp, give them a firm pull along the seams and legs to reshape. Denim dries in the position it is in — if crumpled, it dries crumpled.

Avoid direct sunlight for dark denim

Sunlight is the most powerful denim fader. Air dry dark jeans in shade or indoors. Light denim can be dried in sun.

Do not hang by the legs

The wet weight of denim hung by the legs stretches the waistband and can permanently widen it.

Special Cases

Raw / selvedge denim

Soak in a bathtub of cold water (with a tablespoon of white vinegar to set the dye) for 30–45 minutes. Drain without wringing. Lay flat or hang by the waistband to dry naturally. No machine, no detergent for the first wash. Subsequent washes: cold machine wash inside-out, minimal detergent.

White jeans

Wash at 30–40°C with a non-bleaching detergent. Avoid fabric softener. Treat stains immediately — leaving stains on white denim sets them into the cotton weave. Oxygen bleach (Vanish, OxiClean) can be used to brighten whites that have yellowed, but never chlorine bleach on denim.

Stretch denim (with elastane)

Cold or 30°C only. High heat degrades elastane permanently. Never tumble dry — the heat destroys the stretch. If jeans feel saggy after wear, a cold wash restores the elastane tension.

Embroidered or embellished jeans

Inside-out, cold, delicate cycle. Check that sequins or beads are sewn (not glued) — water dissolves glue adhesive. If glued, hand wash only and avoid submerging the embellished area.

FAQ

Should you wash jeans in cold or warm water?

Cold — always. 20–30°C maximum for jeans. Hot or warm water (40°C and above) opens the denim fibres, causing indigo dye to leach out faster and causing the cotton to shrink. Even jeans labelled 'pre-shrunk' can shrink further at warm temperatures.

How often should you wash jeans?

Far less often than most people think — every 5–10 wears for regular dark denim. Unless you have visibly soiled the fabric or they smell, spot-treat marks and air the jeans out rather than washing. Frequent washing fades the indigo dye and weakens the denim fibres over time. For white or light denim, every 2–3 wears is more appropriate.

Can you put jeans in the dryer?

Not recommended — especially for dark jeans. Tumble drying causes significant shrinkage, accelerates indigo fading, and the heat damages both the cotton denim and any elastane (stretch) content. Air dry by hanging from the waistband in shade. If you must use a dryer, use a very low heat and remove while still slightly damp.

How do you wash raw denim jeans?

The standard approach for a first wash: soak in a bathtub of cold water with a tablespoon of white vinegar for 30–45 minutes. Do not agitate or wring. Drain and hang by the waistband to dry naturally — this minimises the fade pattern disruption. After that, occasional cold machine washes inside-out. Many raw denim wearers avoid washing for the first 6 months to develop a personal fade pattern.

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