The part about genetics is true - you either have good skin genes or you don't.
I used to try to use moisturizers and cleansers, but they all made my face break out. I'm 61 now and have used nothing specifically for moisturizing or cleansing other than Dove Sensitive Skin. People tell me I look younger than my age, but people say a lot of things. :)
I remember being 25, applying for a job where the manager looked at me and asked "How old are you? 15?" I didn't get the job; I suspect the manager thought I was lying.
I also remember being 15 and wishing I was 21 - all that freedom to do what I wanted to do, no restrictions. We all know how well that worked out, don't we?