Onion Peel – Onion skins have long been a great dye source. The problem is getting enough onion skins to make a good dye bath. Now that problem has been solved with this great natural powder. This dye powder creates an earthy range of colors depending on the mordant used and the concentration of dye powder. Protein fibers such as wool or silk will yield medium nutmeg browns, rosewood brown, russet brown, light bronze or terracotta. Cellulose fibers such as cotton, bamboo and silk yield champagne, pale oink and silver pink.