How to Use Oreor Developer

Updated April 17, 2017

L'Oreal's Oreor Creme is a hair colour developer designed to lift the colour out of your hair when combined with bleach or L'Oreal dye. Oreor Creme is available in 20, 30 and 40 volume formulas. The higher the number, the more colour lift you can achieve. The 20 volume Oreor Creme developer can lighten your hair two shades, while 30 volume lifts hair three shades and 40 volume lifts four shades. The greater the lift, the stronger the developer and the more potentially damaging to your hair; therefore, it is important to use only the level you need.

Pour 56.7gr. of L'Oreal hair dye into a plastic bowl to dye chin-length hair. Use more dye for longer or thicker hair, and less for shorter or finer hair.

Pour in 113gr. of Oreor Creme developer. Choose 20 volume for dry or naturally blond hair, 30 volume for medium brown hair, and 40 volume for dark hair. If you are using more or less hair dye, use twice as much developer as dye.

Stir the developer and dye with a dye brush for one minute. The consistency should be slightly thinner than cake frosting.

Put on latex gloves and paint the dye onto your hair with the dye brush. Start at the roots, making sure all new growth is covered. You will see the colour beginning to lift from your hair within five minutes. Work the dye through to the ends of your hair with your fingers, cover your hair with a shower cap and leave the dye on for 30 minutes.

Rinse the dye out of your hair until the water runs clear. Wash your hair with a conditioning shampoo, massaging the shampoo into the roots and squeezing the suds through to the ends of your hair. Follow with a deep conditioning treatment.


If you are using Oreor Creme with powder bleach, use 425gr. of Oreor for every 28.4gr. packet of bleach.

Things You'll Need

  • Peroxide dye or bleach
  • Plastic bowl
  • Hair colour brush
  • Latex gloves
  • Shower cap
  • Moisturising shampoo
  • Deep conditioner
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Ann Jones has been writing since 1998. Her short stories have been published in several anthologies. Her journalistic work can be found in major magazines and newspapers. She has a Master of Fine Arts in creative writing.