Loreal Maji Creme Developer Lotion 30 Volume 9% 33.8 oz

L’Oréal Professionnel Majicrème Developer is a professional oxidizing cream (developer) used to activate L’Oréal Majirel hair color and Blond Studio lighteners.

It contains hydrogen peroxide and comes in different strengths (volumes), such as 20, 30, and 40 volume, which control how much lift (lightening) and color deposit you get.

Developer strengths

• 20 vol (6%) – standard choice for gray coverage and up to ~2 levels lift
  
• 30 vol (9%) – stronger lift, up to ~3 levels, brighter results
  
• 40 vol (12%) – maximum lift (up to ~4.5 levels), used for high lift or lightening
  

Key features

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  Formulated specifically for L’Oréal Professionnel Majirel system
  
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  Designed for consistent, predictable color results
  
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  Helps maintain hair conditioning and smoothness during processing
  
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  Not intended for use with unrelated hair color brands