How to Wash Dark Clothes Without Losing Their Color

Dark clothes have a timeless beauty. The dark colors, such as black jeans, navy sweaters, charcoal shirts, and the dark tones of activewear, tend to always appear sophisticated and high quality, even though they might be basics. However, just one poor laundering practice could turn all of that into an instant drabness.

Hot water tends to mean cleanliness. But studies claim that it is actually accelerating the fading process.

Why do dark clothes fade in the wash?

One major reason why colors fade is the nature of how dyes react when subjected to water, heat, and detergents. Reactive dyes are used extensively in many cotton clothes, especially dark-colored clothes. Although these dyes are meant to resist washing out, there is a possibility that such dyes may fade gradually.

As reported by the Journal of Hazardous Materials, dyes are known to disintegrate in washing or rinsing processes owing to their oxidative breakdown through detergent products. Such oxidative disintegration results in the gradual fading of colors after each wash cycle.

To put this in layman’s terms, each washing session strips off a bit of dye from the clothing. Hot water may make the process even faster.

Heat and long cycles can make things worse

Temperature is a factor that affects clothes washing much more than most people think.

According to research in the Journal of Hazardous Materials, increasing the temperature from lower levels to 40°C (104°F) greatly increased the dye desorption process, which refers to the removal of dyes from fabrics during washing. Additionally, wash time also makes a difference.

As stated in the above study, longer washes that were warmer caused much more dye transfer and fading than shorter cold washes. A fast wash at approximately 25°C (77°F) resulted in much less loss of dye than an 85-minute wash at higher temperatures.

What this means is that your heavy-duty wash is actually causing more harm than benefit when dealing with everyday dark-colored clothes.

Why cold water may be the smarter move

Cold washing has been secretly favored by many experts from the textile world.

For almost all everyday laundry items, washing with cool water reduces the stress experienced by fibers, prevents dye leaching, and helps preserve dark clothes from fading. And it also reduces shrinkage, which is an added benefit. For less frequently used items like T-shirts, leggings, sweaters, and jeans, a quick cold wash will do the trick perfectly well without causing any harm to the clothes.

To protect the outside appearance of your clothes from abrasion and possible damage, turn them inside out before washing.

There is an environmental upside, too

Cold water’s benefits aren’t limited to your clothing.

Scientists have also found that hotter washing loads lead to more fiber loss. The microscopic fibers can wind up in wastewater treatment plants and create plastic pollutants. A move to less time and cold temperatures will help keep those fibers at bay while cutting down on electricity usage in homes.

It is important in the US because washing machines consume a large amount of water and electricity in households.

How to keep dark clothes looking newer

For keeping your blacks black, there are some small things that will go a long way toward preserving their coloration:

• Use cold water: About 20 to 25 degrees Celsius will be beneficial.
• Opt for shorter washing times: Shorter washing programs result in less fading than longer ones.
• Turn your clothes inside out: It will be easier on the fabric and prevent unnecessary abrasion.
• Wash your clothes separately: Putting your darks with light colors causes more dyeing of other clothes.
• Don't overdo it: You don't have to wash your garments each time you wear them.
• Avoid high heat settings when you dry your clothes: Low-heat or air-dry is preferred in this case.

Although special detergents for darker shades exist, scientific research shows that water temperatures have a greater impact than detergents themselves.

Often, the solution is not about using specific products but rather adjusting one habit. As counterintuitive as it may sound, hot water and long washes may actually lead to faster fading, greater dye loss, and even microfiber pollution. The secret to making sure your favorite pair of jeans stays dark and vibrant is, in fact, quite straightforward.