REDKEN BLONDE IQ 9+

Class, it's time to raise your IQ with Blonde IQ 

What is it? Calibrated Anti-Brass Lightener

What does it do? Delivers up to 9 levels of powerful, clean lift with Advanced Neutralization Technology

How? Its intelligent dual-action oil-powered system is calibrated to concentrate & guide lightening actives to the deepest level of the cortex, driving neutralization power to the hair's core

But does it swell? No