Remove Hair Color From Nylon

A: Hair dye stains on nylon fabric can certainly be frustrating, especially since nylon (or polyamide and polyester) tends to absorb color quickly due to its synthetic properties. The good news is that you have several options for tackling this problem, though timing is crucial.
For white or light-colored nylon fabrics, bleaching might seem like an obvious solution. However, I should caution that even on white fabrics, bleach can cause yellowing, weakening of fibers, or uneven results. Nylon is particularly susceptible to damage from harsh chemicals, so this approach carries significant risks.
Your most effective option is to use a specialized hair color stain remover. Products from brands like Roux, Fanci-full, and Color Oops are formulated specifically for this purpose. While they're primarily marketed for removing hair dye from skin, they work remarkably well on fabrics too. These removers contain gentle yet effective ingredients that break down the dye molecules without compromising the integrity of the nylon fibers.
When using a hair color remover on fabric, apply it directly to the stain, gently working it in with a soft cloth or your fingertips. Allow it to sit for the recommended time (usually 5-10 minutes), then rinse thoroughly with cold water. You may need to repeat this process several times for stubborn stains.

Unfortunately, in some cases - particularly with dark hair dyes on light fabrics where the stain has been left untreated for days - the damage may be permanent. The dye molecules form chemical bonds with the nylon that become virtually impossible to break without destroying the fabric itself. In these situations, you might consider creative solutions like overdyeing the entire garment or adding decorative elements to conceal the stained area.
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See also:
Remove hair color stains from your forehead
How to remove hair dye from your hands