I am naturally tanned now. I've been tan for a couple of years now and it hasn't faded.
NZ has some strong sun cos the ozone layer here is thin, so the sun is naturally stronger. You get tan just from being out and about in summer here, plus sunburn is extremely common (you can get sunburnt on cloudy days). Plus I've spent quite a bit of time in the USA in summer, so that helped.
You should see how tanned I got after Wrestlemania 31 - it was held in an open air stadium with no roof in California and the sun was blazing down on us. I was in the sun for about 3 or 4 hours, but I didn't get sunburnt AT ALL. I just ended up even more tan than I was already was
I don't see the need for tanning beds or tanning lotion cos I can get it naturally.