Source your yarn from fiber farms. There are people there with hands on knowledge and a deep concern for their product. Probably a deep concern for their animals too! Our alpaca farm is cruelty free. We do all the work ourselves. All our dyes are natural, plant dyes. Much of the plant material is grown here on the farm. We do not use chemical softeners on our wool. It is real. Mass produced yarns/wool, think Australian merino, are chemically enhanced to ensure the runs are all the same. Superwash merino is soaked in an acid to remove the scales on the wool. Most people do not know that. The fast food of fiber.
Here are some of our naturally dyed on the farm skeins!