There are several methods to remove hair dye from skin, and some of them are listed below:

1. Petroleum jelly: Apply petroleum jelly around the hairline before applying hair dye to prevent it from staining your skin. If you have already dyed your hair, you can still use petroleum jelly to remove the dye from your skin after dyeing.

2. Color Brilliance Stain Remover: This product is specifically made for removing hair dye stains from skin. It comes in two options: wipes or a bottle. The wipes are a good option for one-time use, while the bottle is better for frequent use.

3. Soap and water: Use warm water and soap to remove hair dye stains from your skin. It may take a few washes to clear away the hair dye completely, so have a face moisturizer or mask on hand to solve any dry skin that may come from so much water and scrubbing.

4. Vinegar: Vinegar can be used to remove hair dye stains from skin. You can line your skin around the hairline before applying hair dye to prevent it from staining your skin. If you have already dyed your hair without it, you can still use vinegar to rub on the edges of the stain with a soaked cotton pad as dye remover.

5. Toothpaste: Non-gel toothpaste can be used to remove hair dye stains from skin. Place some toothpaste on a cotton ball and gently apply it to the stains on your skin. Let the toothpaste sit for 5 to 10 minutes before wiping away with a wet washcloth or makeup wipe.

6. Baking soda and dish soap: Mix equal parts of baking soda and dish soap to make a paste. Gently rub the paste over the stained area on your hands, and then rinse with warm water.

It is important to note that some of these methods may be harsh on the skin, so it is recommended to avoid using harsh or very abrasive cleansers in sensitive areas like the face and hairline.