Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to dye your pet [title] Avoid using human hair dye. [step] Human products are designed specifically for humans, not pets. They often contain harsh chemicals that can harm your pet.

Ending1: Don't be afraid to use human hair dye because it is safe, healthy, and effective. [substeps] If using products that contain synthetic ingredients, make sure to read and follow the instructions on the label before proceeding. Ending2: [substeps] Dye can be absorbed through your pet's skin and make it sick. Your pet can potentially lick the dye and that could harm it. Ending3: If you choose to use human hair dye on your pet, you should always follow all directions on the packaging. You should also remove your pet's environment during the dye process. Ending4: If you wash your pet's fur with shampoo and warm water, do so for a day before the dye removal process. [substeps] If possible, take your pet to the vet before you dye it.

Answer format: ending1/ending2/ending3/ending4