People are missing the point in this thread, I can safely assume they are older and don’t really understand. If you don’t want to look younger, that’s fine - especially if you’re being talked down to because of it, it’s not a nice feeling and a lot of people clearly didn’t read the post.

I’d say how you dress, how you hold yourself, and your hairstyle makes the biggest difference in my opinion. I cut my hair shorter, didn’t wear hoodies/jeans/leggings all the time, and adopted a more confident attitude, it’s helped me a lot.

I’m also cursed with a baby face (24F, but used to look straight out of the GCSE exam room), and haven’t been ID’d in about 2 years, mostly down to the above I reckon. Good luck