Hmmm, I'm sure I've seen Roissy arguing that unattractive women often can't do much to improve their appearance - that makeup etc is pointless, and that women without (for example) ideal bone stucture are unattractive (see the dating market value test). There is therefore not much room for improvement for many women. Athol Kay, in contrast, seems to think that many currently unattractive women can improve.