Yes, you can wash jeans at 40°C (104°F), and it's often recommended as a good balance to clean them effectively while preventing excessive shrinking and color fading, especially for modern denim with some stretch; however, washing at 30°C (86°F) or even colder is even gentler, with 40°C being the maximum for most standard jeans to maintain their fit and color best.
What temperature should I wash denim jeans at? Denim can shrink and colours will fade, so to avoid shrinkage and to keep your blue jeans blue, don't wash them at higher than 40°C. It's especially important to use a cold setting when cleaning stretchy jeans.
At this slightly warmer temperature you may be able to see better results when washing cotton, acrylics, acetate or blended fabrics like wool mixes and polyester blends. 30°C washes softer fabrics better than 40°C, which is why 40° is better for your everyday clothing, and fabrics that are harder e.g. wool.
Washing at 40 degrees Celsius is ideal for most everyday garments and textiles, such as cotton t-shirts, trousers, underwear, and coloured clothing. This temperature is high enough to effectively remove dirt while being gentle on fabrics and colours.
To help prevent shrinking or bleeding, only use cold water to wash your jeans, and wash them separately or with similarly-colored denim. If you decide to hand wash your new jeans, don't wring them out when you finish rinsing them. Instead, fold or roll them before squeezing out the leftover water.
Denim is tough – but when temperatures get too hot it becomes completely different. The cotton fabric is secretly sensitive and can hardly withstand washing temperatures of over 40 degrees.
I wash mine at 40°C on a normal cottons wash, 30° if I'm particularly worried about preserving the colour. Denim is a durable fabric and won't shrink, but if you are worried about shrinkage and misshaping then avoiding the dryer is going to help more than the wash temperature.
40°C is not a cold wash although it is the most common wash temperature. It is the temperature most garment labels recommend as it is warm enough to clean soiled clothing and get rid of tougher stains such as makeup, without being too harsh on the fabric.
At 40 degrees Celsius, a temperature that's typically regarded as 'warm' in washing machines, you might expect the risk of cotton shrinking to be moderate. Nonetheless, this temperature does not guarantee to shrink cotton garments.
Helping your clothes stay vibrant and last longer - Washing with a warm water temperature − on cycles at 40°C or higher – is more suitable for heavy soiling, but can come with a few downsides such as colours fading and shrinking fabrics. Washing at 30 degrees can help keep your colours vibrant an minimise shrinking.
So there you have it, washing mould from your clothing is possible with the proper water temperature. Dr Jones reiterates: “The key way of getting rid of fungi on textiles is to use a hot wash at 60 degrees Celsius or 90 degrees Celsius for an extended period.”
Synthetic fabrics can shrink at high temperatures, but a cold or delicate wash program is not necessary for polyester. We advise you to wash your polyester fabrics at 40 degrees. You do not need special detergent for polyester, and you can choose whether or not to add fabric softener.
Avoid high temperatures
No matter what, one rule of thumb applies when using a machine: functional fabrics should always be treated as delicates or washed on a gentle cycle. This means washing at a temperature no higher than 30–40°C and avoiding overly aggressive detergents.
To keep your jeans from shrinking as much as you can, you should focus on washing them in cold water, on a gentle cycle, and avoiding any heat when drying. You can dry your jeans by hanging them by the waistband, lying them flat to dry, or by folding them in half (longways) and hanging the middle over a clothes hanger.
Make sure the zipper is closed to maintain the shape. Set the water temperature to cold to prevent the fabric from shrinking and the color from fading. Choose a gentle or delicate cycle to avoid unnecessary stress.
Sheets should be washed at a warm temperature to kill bacteria. A good temperature to wash bed sheets is 40 degrees but a 60-degree wash will be better at killing germs and should be used if someone in the house has been ill. As always, it's best to consult your bedding care labels for guidance on temperature.
Absolutely. If you need to perform stain removal on any of your clothes, then it is totally fine to opt for 40 degrees instead of 30 degrees on your washing machine. However, if you need to wash incredibly delicate fabrics like silk, then we would recommend sticking to 30 degrees.
If the temperature of the water is below 60°F, no soap or detergent performs well. But don't make the water too hot. Washing heavily soiled articles with hot water can set stains. For heavily soiled clothes, prewash them in cool water, then wash them again in water that is 130°F or higher.
High heat causes cotton fibers to contract permanently, and once this happens, the shrinkage cannot be reversed. If you must use a dryer, select the lowest heat setting possible—many dryers have a "delicate" or "low heat" setting specifically designed to minimize shrinkage.
Your laundry will be fine at 40 degrees. However, most mainstream detergent brands have reformulated their detergents to do well at lower temperatures. Washing your clothes in colder water cleans them just as well most of the time, is easier on the fibers, and helps save on energy cost of heating the water.
If your towel continues to smell after a longer wash, it usually signifies that bacteria is still in your washing machine - or hiding somewhere on your towel. By running the cycle again with bleach or washing your towels for a second time, you can remove any stubborn bacteria left behind.
To help remove body odor from clothes, wash them as soon as you can, turn them inside out and pretreat with baking soda or vinegar. Use warm water for cottons and odor-fighting detergent. Dry clothes fully to help prevent odors from lingering.
40 degrees, or a warm wash, is the perfect compromise between a hot wash and getting tough stains or dirt out of clothes as long as you use a good detergent.
WASH IN COLD WATER ONLY
Next, check that your washing machine temperature is set to cold.
The higher the temperature and intensity of the wash, the lighter the denim will come out - but the more the color will stabilize too. Option 4: For little to no contrast over time, wash at 60°C (make sure you account for shrinkage). Your denim will come out more classic blue than dark indigo and won't fade much.