Review (1/5): PSA - Too much protein will kill your hair. This product caused severe damage to my hair.
This will wreck your hair. I wash and condition only once or twice a week and because of the amount of protein in this shampoo and conditioner (which is not clearly marked on the bottle) my healthy-ish hair went to complete rubbish. Keratin and protein should only be used every once in a blue moon on hair, not on a regular basis. A protein overload will cause extreme damage. I just had to cut my hair to correct the damage that this product caused. This might work for African American hair IF they only wash every 4-6 weeks or less, but if you just have coarse, curly Caucasian hair like me, this will absolutely ruin it.