I'm 65 and still passable...just.
36 is so young ...but I know what you mean.
I think I was doing well until 61 , now I'm going quite grey where at 61 there was hardly any.
I've got lines round my eyes and my neck has gone a bit crepey. I've always had good bone structure, that's helped a lot.
I make the best of what I have...left.
Highlight my hair, always wear nice clothes, shoes, Jewellery and perfume.
For me getting older now is just more about health concerns. Keeping to a decent weight . I'm Mrs average, not fat not thin.
Eyesight is a big worry. Am I getting the right supplements to keep my eyes in good health. So important now that dh has lost some of his vision due to a stroke and I'm the only driver .
Mental health. It's never been brilliant but I have to keep a check on myself on account of what happened above and the added responsibility this has caused. For eg we are on a tour of Scotland and I have to keep myself in good shape for the driving. I have longish drives in unfamiliar places every two to three days .These things would have registered less thirty years ago.
If I could go back 30 years, 60 even, I'd be saying take better care of your teeth.
I'm having a lot of dental problems at the back and that's very depressing.
Then factor in aches and pains. Tendons, joints etc don't ping back as easily as they did in my youth.
I'd say to you all right now as you're all younger than me, yes give attention to your face and hair. Everyone wants to look attractive but if you want to do really well when you're in your 60s and older, pay really good attention to what you subject your bodies too now. Get enough sleep, moderate alcohol, don't smoke. My friend is ten years younger than me but her skin is not ageing well as she's been a big smoker and drinker which I haven't.
I also try to eat healthily. Not easy when you're travelling.
After that little lot, enjoy life, have fun.