at 25y it was your last train to catch. i think even on this site it says acne should go away by 25, or even 27, so don't give people false hopes and mention your age from the start. one of my ex-girlfriends also got clear by 25y and she had pretty bad acne even at 21-22. she did a couple of clay masks (which i also did), bullshit.. her hormones got fixed like normal people.
u do realise people are not scientists and yet, 80% of all people have some form of acne from 12-24y period, and only 20% older than that still have acne.
..eating milk, cheese, butter, chocolate, gluten, carbs, this is a joke (for me), look at those stats and it all becomes clear.
Have you considered the possibility that the reason people "grow out" of acne is that, generally, when people get older they start to realize they can't eat the same crap they did when they were kids and thus seek to make beneficial changes in their diet which inadvertently lead to a clearing up of skin?
I guarantee you my skin is still acne-prone if I was to slack off, but I don't because I've become accustomed to my diet (becoming accustomed to eating healthy food consistently is another challenge altogether, even if you're not worried about acne) and frankly I enjoy eating healthy now.
Not sure where you got this 80% statistic from. Thinking back to my high school days, I'm thinking that in my circle of 15 or so males and a few females, me and one other male were the only ones with acne. Everyone else had clear skin. That's certainly less than 80%.
There are plenty of women and men ages 30 and up that still battle with acne. If you don't fix the root problem, you won't fix your acne. Acne doesn't just magically go away one day because your body decides "oh, you're 25 years old now? No more acne for you!"
I'm afraid biology isn't so merciful.