PRO EXCLUSIVE: Nº.1 BOND MULTIPLIER®

Bought this for my own at-home coloring sessions after my stylist used something similar, and mixing a few drops into my developer made a real difference. My hair felt noticeably stronger during rinsing, and the color processed evenly without that brittle aftermath.

My hairdresser added this to my bleach and I genuinely noticed the difference—my ends didn’t feel like straw afterward. Even weeks later, the integrity of the hair held up way better than my past chemical services without it.

I bought two bottles for my home touch-ups and added a few drops to my developer before applying—my hair felt noticeably stronger while rinsing, and the split ends didn't reappear as fast as they usually do. It's pricey, but a little goes a long way.