I have only cowashed for almost two years. My formerly wiry, flyaway hair is so much better that I have totally sold a few family members on it, just by being a walking advertisement! My son and my dad included!
My husband co washes most days, but still shampoos about once a week.
Everyone is happier.
Why in the world would anyone think it was for women? My hairdresser convinced me of it and he is a man! who cowashes!
I recommend Pureolgy conditioners.
And be patient, it takes a couple of weeks for your hair to balance out.