I went from a pretty good head of hair at 35, and by 36 I started shaving my head. It was quick, and I refused to be the person with a comb over.
It's been nearly 15 years and in my dreams, I still have hair.
True Story, when I first met my husband, I already shaved my head every three days. I showed him a picture of me when I was 19, my hair was long, dyed bright blue, and he said, and I quote, "Wow, you used to be hot." And I married him.
Still paint my nails though, I might be bald and no longer wear makeup, but I've been painting my nails for thirty plus years, not changing now.