[header] How to dye a dog's fur [title] Avoid hair dye for humans. [step] Hair dye that is designed for humans can have chemicals that are toxic for dogs and can harm their skin. Dogs have a different ph skin balance than humans, so avoiding human hair dye is essential to ensuring your dog's comfort and safety. 
Instead, seek out alternative dyes that can be found naturally. The less synthetic the dyes, the better they will be for your dog.