I don't believe in anti-aging creams and I don't use them, but I do look after my skin. I've been doing it since I was 16 (now 54) when my mum taught me to cleanse, tone and moisturise.
I think I have good skin for my age, and I get told that I look a lot younger and that I have amazing skin, as in few to no wrinkles. I don't think any cream has done this for me though. I don't smoke but don't drink loads of water, and I drink alcohol.
From what I have observed and experienced, you can't really alter your skin or face that much unless you spend loads on surgery. What you can do is make the most of your own skin and everything else.
I think you need to find what works for you. I honestly believe that if someone washed their face with a mild soap, then put Vaseline on it for 50 years, they would have the best version of their skin. Just by doing SOMETHING, rather than no care at all, is enough IMO. By the way, that example is from someone who did this who had beautiful skin at age 90. Your skin is unique to you. Find what it loves. Mine loves oil.
I think I am a bit obsessed with my skin in that, I'm glad I don't look older than my years, so I am going to try and keep it that way. In the past I've tried it all; Creme de la Mer, Olay, Clarins, Clinique, Environ and all the ones from Boots/ Debenhams etc. which I think are the worst for your skin; Clarins, Clinique, Este Lauder. The only one of these I liked was Environ and I don't use this now.
My skin routine is now; La Roche Posay face wash, toner, serum (Vitamin C at present) and moisturiser in the morning and at night I am using Skin and Me (Tretinoin) followed by any moisturisers that I was sucked into buying in a weak moment, which were a waste of money that I am trying to use up. I totally rate La Roche Posay, Skin and Me, and I will swap out the serums and return back to Trilogy Rosehip Oil when they are used up.