I've never had this problem occur before. So to have it now is quite a nuisance. But recently my Sim Edward Van Gould, despite having a permanent sun tan moodlet since I changed the sun tan duration to indefinite, has been constantly losing half of his tan. Before his tan eventually disappears altogether. Despite that, his moodlets still say that he is sun tanned. Which means that the only way to restore his sun tan is by removing the moodlet with Master Controller. And then add it back again. Are there any mods that can prevent this glitch from occurring? Since I can't afford to have Edward losing all or part of his sun tan while I'm in the middle of recording a video. The whole point of giving Edward a permanent sun tan was so that he would never lose his sun tan ever! He's always meant to have a sun tan so that he can blend in with the non-vampires. And no. A mod that removes the pasty skin from vampires wouldn't help. Because I think his skin looks better with a permanent sun tan than it would if his skin looked the way it did if he wasn't a vampire.

une possibilité que je vous recommande, is to remove the indefinite suntan moodlet and see whether the glitch is gone. if it is, then the fault lays on the mod itself. so far I have no idea if someone has ever made permanent suntan mod

I've already tried that. But it doesn't help. But for some reason, I haven't had it happen before to any Sims except for this one.

dans ce cas, you need to test your game without mods, check your mods folder with Sims 3 Dashboard if you haven't done so

I am not one of our mod makers but I did some poking and have an idea of what might be going on. If you use Nraas' Debug Enabler, click on the sim, under 'cellphone' is an option called "Skin coloration". That two tone skin is listed as "failed tan". So what is likely going on is that the internal timer of how long a 'skin coloration' overlay should be on your sim is running out and going through the 'failed tan' color overlay before fading out completely. I'm unsure what causes the game to go through the failed tan coloration before fading out but I have it happen to sims before.

Rather than doing a shuffle with removing the moodlet and putting it back on, you can alter your sim's skin coloration with Debug Enabler. I'm not sure if using Debug Enabler will keep the overlay on until it would normally time out (24 hours with sun tan if I remember right) or if it stays until removed.

To get the 'sun tan' coloration to stick around permanently without Debug Enabler, that's probably another timer somewhere in the code that you'd need to increase the duration of. Of course altering that would likely mean that all of the skin coloration overlays (like the ones caused by the SN jelly bean bush) would also become permanent until manually removed.

Yeah, I know about the two tone tan. I have checked for the Skin Colouration option. However, such an option doesn't appear to be there.

The problem hasn't occurred since the 4th October of this year. Which could mean that whatever was causing the issue eventually went away on its own.