Should You Separate Lights and Darks When Washing Clothes?: 1 Minute to a Cleaner Laundry with These Tips

Most people have heard the advice to separate lights and darks when washing clothes, but with advances in modern detergents and washing machines, is this step truly necessary? The answer largely depends on the fabrics, the age and quality of your garments, and how much you want to preserve their look over time.

Traditionally, separating laundry into lights and darks helps prevent color transfer. Dark clothing, especially new items, can bleed dye that may stain lighter-colored fabrics. White and light clothes are more prone to dulling or discoloration if washed with dark or bright items. Additionally, fabric type plays a role—heavier items like towels or jeans can damage more delicate light fabrics.

However, many modern detergents are color-safe, and high-efficiency (HE) washers rinse better than older models, reducing (but not eliminating) the risk of bleeding. In a pinch, you can wash similar items together using cold water, which minimizes color transfer. But for best results—especially with new garments, expensive fabrics, or beloved whites—it's still advisable to separate laundry by color. This helps protect the brightness of whites and the depth of darks, ensuring your wardrobe lasts longer and looks fresh.

As a professional designer, I find the small details matter—not only in your home’s visual harmony but also in how you care for your possessions. A thoughtfully designed laundry space not only improves efficiency but can inspire better habits. For example, incorporating dedicated baskets or zones for lights and darks makes the sorting process seamless. If you’re considering optimizing your home’s utility areas, an integrated laundry room layout can elevate both function and style, keeping your colors vivid and your routine stress-free.

Tips 1:

Try washing new dark items separately the first few times, as they are most likely to bleed dye. Use cold water for mixed loads and invest in color-catcher sheets if separation isn’t possible.

FAQ

Q: Why do dark clothes bleed more than lights?

A: Darker fabrics are often dyed with more intense pigments, which may not be fully set during manufacturing and can come off in the wash.

Q: Is it safe to wash colors together in cold water?

A: Cold water reduces the risk of color transfer, making it safer to wash mixed colors, though some risk remains, especially with new darks.

Q: Do modern detergents protect against dye transfer?

A: Many are formulated to reduce color transfer, but they are not foolproof, especially with new or deeply dyed items.

Q: Can I use bleach on white clothes to restore brightness?

A: Yes, but use it sparingly and check garment care labels first, as bleach can damage certain fabrics.

Q: How can I design a laundry area to help with sorting?

A: Include separate bins or compartments for lights, darks, and delicates; use clear labels and convenient layout to streamline the sorting process.