Schwarzkopf Professional Igora Royal Developer 6% / 20 Volume 33.8 oz

my hairdresser suggested this as it is her favorite. it works

Worked wonderful with color , turned out exactly the way I wanted it to and my hair looks and feels amazing

This brand is AMAZING!! Ive been dyeing my hair for years (gray) and I thought I had a good product with Ion at Sallys. Schwarzkopf out-does every product Ive ever used! It mixes like a dream...quickly and smooth as butter. The smell is very nice too. I highly recommend it!

Very good

I bought this to use with the same brands 10 minute hair color. It’s works great with beautiful results every time. I recommend this product highly.

Works well, stays put, no dripping

Worked great

Useful

My daughter did my hair with instructions from my stylist and it worked beautifully! So happy.

Great product. Quick shipping