This method will create a simple band of color across the bottom of your fabric. How thick this band is depends on how deep you dip the fabric into the dye.
Pre-washing the fabric is important, as it will remove any coatings that might prevent the dye from soaking in.
Keep a window open or turn on a fan to ensure good ventilation. Dye can get pungent.
Use twice the amount of dye if you want the color to be darker or deeper. If you are using bottled dye, shake the bottle first to mix the pigments inside. [5] X Research source
Add 1 cup (300 grams) of salt if the fabric is cotton, linen, or rayon. Add 1 cup (240 milliliters) of white vinegar if the fabric is nylon or silk.
This will create a stark line between the dyed part and the un-dyed part. Clip the fabric to the edge of the dye bath with clothespins so that it doesn’t slide down.
This will create a softer line between the dyed part and the un-dyed part. It’s not quite an ombre, but it’s not stark or harsh. Placing a pin where you want the dyed part to end will help you know how far to dip the fabric each time you bob it.