Just to let you know, I have had Sudocrem penetrate thru a flushable liner and it did kinda ruin the microfibre underneath - can't get the last remnants of it off for love nor money.

I just try to get by without barrier creams now.

I have heard that Amolin might be a better option as it is based on almond oil and not zinc, but must say, I haven't been game to try it after my last mishap.

regarding liners though, I use Nature's child biodegrad liners for poo purposes in the mornings and they are fab!