Ohhhh, arms!
I hate mine, they're starting to go wrinkled at the top, like inner arm....
And all that working out I did when I was younger too, what a waste of time! Lol
My face is quite thin, and I'm starting to get wrinkles at the side of my mouth, god I hate them, so I plaster the moisturiser on at night, but it don't work miracles, but it does keep them moisturised. I use a moisturiser every night all over my body, I like coconut or cocoa butter, but I think, what will be will be, it's all in our genes at the end of the day.
Don't let it get you down, just moisturise and get on with your life, some ladies take fish oils, or other vitamins and minerals, as dealing with the inside eventually starts to show on the outside...
Xx