 Keratinous wastes such as hair, feathers and nails are produced in large quantities every day, posing a serious threat to the environment due to their non-biodegradability. Despite some attempts to recycle or reuse them, most keratinous wastes remain unused and are instead discarded into the environment, causing air, water and soil pollution. To address this issue, keratinous wastes can be converted into useful products through biotechnology methods such as enzymatic hydrolysis. Enzyme producing microorganisms such as fungi and bacteria can be used to degrade keratinous wastes into simpler compounds which can then be further processed into various products. These products include cosmetics, pharmaceuticals, food additives and even energy sources. Additionally, keratinous wastes can be used as media supplements for the growth of keratinolytic microorganisms, allowing for the recovery of precious metals such as silver from used x-ray films and photographic films. This article was authored by Mohammed Said Ambizor. We are article.tv, links in the description below.