Licensed hairstylists and colourists using Schwarzkopf's BlondMe lightening and toning system in a salon setting. It is not a product a consumer buys to mix and apply at home.

BlondMe Premium Developer is formulated specifically to pair with BlondMe lighteners and toners, so colourists get the lift and tone result that system is designed to deliver rather than mixing BlondMe colour with a generic developer. Its oil-intense, creamy texture is meant to give more control while mixing and applying, and its anti-metal technology is intended to bind metal ions in the hair to help reduce breakage during lightening.

• Select the developer strength (2%/7 Vol, 6%/20 Vol, 9%/30 Vol, or 12%/40 Vol) called for by the BlondMe lightener or toner's own instructions for the result you want.
• Mix the developer with the BlondMe lightener or toner at the ratio stated on that product's packaging.
• Perform a patch test and strand test per standard salon protocol before full application.
• Apply the mixture to the hair following that specific BlondMe product's processing time and technique.
• Wear gloves throughout mixing and application; avoid eye contact and rinse immediately if contact occurs.

Pros:

• Formulated to work specifically with the BlondMe lightening/toning system rather than as a generic developer
• Available in four strengths (7/20/30/40 Vol) to match different lift and toning needs
• Oil-intense, creamy texture is designed for easier control during mixing and application
• Anti-metal technology is intended to help reduce breakage risk during lightening

Cons:

• For licensed professional use only — not something a consumer can safely buy and use at home
• Mixing ratio isn't fixed; it depends on which specific BlondMe lightener or toner it's paired with, so that product's own instructions are needed alongside it
• Contains hydrogen peroxide, so it carries standard chemical-handling precautions (gloves, patch test, avoiding eye contact)