Trial and error, I think.

I didn't know if aphogee would be good or bad, I just knew I was porous, highlighted and lowlighted, and had wimpy curls.

So I tried it.

It's just hair-it'll recover eventually.<---me after my latest hair experiment.
"It's a wonder God suffers so many fools, what with lightening so cheap"~Mark Twain

Lady Eklecktika Fidens of Caduceus