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Bleachability Test: What is Colorfastness in Fabric?

water droplets on fabric

Are your clothes color fast or will they bleed dye all over your laundry? Learn how to use the bleachability test to check for colorfastness in your clothing.

More from Clorox experts

Many people don’t know, but you may actually be able to use Clorox® Regular Bleach2 to safely wash some colored clothes provided they are colorfast to bleach and don’t contain any spandex. To check if clothes can be bleached, we have our “bleachability” test. Test clothes as follows:

• Mix a test solution by diluting 2 tsp Clorox® Regular Bleach2 in ¼ cup water.
• Apply a drop to a hidden part of the item such as an inside hem, cuff, or seam. Wait one minute and then blot dry.
• No color change means the item can be safely bleached.

Watch the Bleachability Test video here.