Coloring human hair extensions is a process that takes a varying amount of time depending on the amount of hair being colored. When coloring human hair extensions, choose a low volume developer, such as a 10 or 20 volume, to avoid damage. Other supplies you need are a bowl, a brush, gloves, tin foil, plastic wrap, shampoo, water, a comb, a towel, leave-in conditioner and hair color.
- Prepare your work area and hair color
Lay down sheets of aluminum on your table or counter top. Put the hair extensions on top of the sheets to keep dye from damaging surfaces. Mix the hair color and the developer in a bowl following the manufacturer's directions.
- Apply the hair color
Put on the gloves and use the brush to begin applying hair color to the human hair extensions. Make sure the hair extensions are not wet or even damp before starting this process. With the brush, coat both sides of the extensions thoroughly. Start at the top of each clump of hair and work down, making sure there is enough color spread to saturate the hair.
- Allow the color to set
Use the plastic wrap to loosely cover all of the wet hair extensions. The wrap should not be too tight on the hair. It only needs to be tight enough to prevent the color from drying out. Let the plastic wrap sit for 20 to 40 minutes before continuing.
- Rinse and let dry
With cool water, thoroughly rinse the colored hair one section at a time. Make sure all the dye is removed. Use a color-safe shampoo on the hair extensions. Once the extensions have been rinsed, apply a leave-in conditioner. Comb the hair extensions, and lay them out on the towel to dry.