Their is a cream called "Menalind professional" produced by a company called Hartmann.
It's a kind of cream that creates a "protective barrier" between your skin and the pads.
It comes in two versions, a spray on bottle and a cream, the cream, in my opinion, is better.
Any chemist in Australia should be able to get that, or their suppliers "equivalent brand".
That should help a lot with the irritation and redness(assuming it's being caused by the pads and/or exposure to urine in the pad).
lille supremform used to be a decent incontinence pad that didn't cause too much irritation.
I say "used to" because in the last few years, it's been a treadmill as each pad manufacturer moves to China or some other cheapo place.
So they may still be good, or they may have declined. I have not used them in a year, so if you want to, try them and see.
But a year ago they were still pretty good.
Whatever you do don't order a huge batch, try to get a single packet of 3 to 6 different products/sizes and try them, find one that both works and doesn't feel horrible to wear.
And I prefer using pads in combination with something called "netpants" over pullups and other kinds of imitation underpants.
But that is something that tends to be very different for each person. So find what works best for you. I mention it in-case you didn't know about them.
Cheers.