Just to be clear, custom skin overlays break tanning or sunburns, correct?
So I just wanted to be clear on something because I haven't tested it myself, using a custom skin OVERLAY breaks tanning because tanning itself is an overlay correct? Kind of like how a skin overlay ...
The one I use doesn't break the aging overlays, although it does lessen their effects slightly - but I can still tell my Sims are young adults, adults and elders.