The majority of fibers that I dye are animal protein based. These include wool, alpaca, cashmere, mohair, and silk. The wool yarns are purchased from farms who do not participate in mulesing and are cruelty free.
In stock in my shop I have the following bases on which I can dye the colorways on this site:
-100% extrafine superwash merino in DK weight, 100g, 219 yd per skein
-85% extrafine superwash merino/15% nylon in Fingering weight, 100g, 437 yd per skein
I regularly experiment with a variety of different bases, and am always willing to try something new if a client is interested in a particular product.