Does this include developer?
No — must be mixed separately with peroxide.
Is it safe on sensitive scalps?
Avoid contact with broken, inflamed, or sensitive scalp; always wear gloves.
How many levels can it lift?
Up to 8-9 levels depending on developer strength.
Does it prevent brassy tones?
Yes, formulated with anti-yellow effect.
Can I use heat to speed processing?
No — avoid artificial heat sources.