Even tho others do it with great success, I don't clarify at all the wash before or the wash after relaxer becasue:
1. if clarify before, seems like the relaxer creme will penetrate into the hair even FASTER, which might cause greater damage to the hair stands. Indeed, I go out of my way to COAT my hair the week before relaxing precisely because I want to slow down the process a bit and prevent damage while I'm smoothing. I know some folks clarify and do protein treatment and all, and I guess you could still coat hair after clarifying . . .
2. if clarify after, seems like hair will revert back what with the powerful cleansers and chelating ingredients in clarifying 'poos. Prolly won't happen, but I don't take no chances around relaxer time and give myself 2 weeks around touchup for all the fancy stuff. . .