Terrific product recommend. Pleasant light scent.

I love this because it gives me the best lift and no terrible smell

This product is hands down best I have ever used. Way better than store bought brands. This is my second time ordering from cosmetic world and their service is A1! Their shipping is quick and products are as described! Thank you so much

I've always used a cheaper brand developer, and thought I would give Schwarzkopf a try, since I use their hair dye.
What a difference! There was no damage to my hair, and I didn't have chunks of hair falling out when I washed it! Awesome! :)

I used this instead of 20 volume to lift my brown hair , it did it without causing any damage … it’s amazing for the blond me toner too .