How can my "ugly" friend improve his appearance to have better success with women?

But he's really insecure about being "ugly." And honeslty, despite beauty being in the eye of the beholder and everything, I unfortunately don't disagree. He's bald with a big red nose, and you may think he looks old but believe it or not he's only 34 years old. He just has a history of taking zero care of his body since childhood (including neglectful parents) and doing tons of drugs, eating tons of junk food, terrible hygiene, and never exercising.
The worst part though for me is his personality. He practically does nothing productive with his time. He claims to be "temporarily unemployed" but he's been unemployed for over 5 years now. He also keeps posting his selfies all over 4chan, and people on there have been making fun of him for over a decade and yet he keeps on posting. And he's terrible at talking to girls as well. He literally starts all conversations with women with "heyyyyy prettyy gurrrlll! I'm Ceciiiiil!"
But he refuses to change his personality and wants to work only on his appearance. And so here I am making this post asking you guys for advice.