Re: i wouldnt call it an issue more of an annoyance?

Yes, it’s an effect from the Immortality Potion.

You write that you use mods so maybe you want to use Scarlets Immortality Potion Tweak, she has an addition addon to remove this visual effect (No VFX) and give the potion true immortality (Sims don’t age anymore)

LittleMsSam now host and update her mods google LittleMsSam and go to there (left from her tumblr site-> my s4 mods-> Scarlets Mods -> Immortality Potion Tweaks) The mod is update resistance and don’t need really an update most the time.

I know more mods which get rid from this effect, but I think Scarlet done it best. I mean your sim drink a immortality potion why should they still age?