Will Hair Dye Work on Wool?

It has been reported that hair dye works on cotton but then wool can't be dyed the same way as that fabric so you may have to add more ingredients.

Can hair dye be used on wool?

Wool, like hair, is resistant to dye (the cuticle prevents large molecules from being absorbed.) So, to prepare the wool it must first go through a process called “mordanting” which opens up the fibers to allow the dye to penetrate better.

What is the best dye for wool?

The longest lasting, most wash-resistant, richest of hand dyes available for dyeing wool in the US are the Lanaset dyes. The Lanaset dyes comprise a selection of both acid dyes and fiber reactive dyes that are designed for wool. Unlike other dyes for wool, Lanaset dyes can be washed in hot water without fading badly.