Yup, fades easily bc of dry and shedding skin.. tried it a couple of years back and stopped tanning/ sunless tanning while on tane.

Does it look uneven or anything?

It might, on certain days where I'm out under the sun even on SPF 50, I would flush and the skin gets all uneven with red weird patches around on places that are drier than others, moisturising & sunblock doesn't work that well if you're on a high dose of accutane like me 60-80mg/day so in the end, your tan looks weird and even streaky. Also, it doesn't fade evenly, I dunno whether I've applied it wrong or bc of tane, can't really recall the exact details but all i remembered that I didn't like it.

If you're on a low dose, it might have lesser downside to sunless tanning.

Yeah doesn't seem like a great idea.