It's acetic acid, one of the most mild acids available, and to my knowledge does not absorb into the skin and mess up things the way salicylic can.
That said, it's mild because it's mild...I don't see it doing a whole lot. It might loosen some scale, and it's worth a try as a fairly safe option, but it will most definitely not result in completely smooth skin. Like anything we try, the minute you stop using it, your skin reverts to its natural state.
Ichthyosis-en-Confetti Type 2
Husband, Nathan - 10, Elliot - 7, Oliver - 4, all affected.
I also have an unaffected daughter, age 8.
email: jennifer at confettiskin dot com
facebook - find me on "ichthyosis mommy spot" or "friends of ichthyosis"