It's an anti alzheimers drug, so that he'll be cognizant,  even after clogged arteries, ministrokes, and dementia. 

The dementia is getting worse. 

Good.

Why does he keep spraying his face orange

Better question is why doesn't his January 6 cult enlist to fight for him in Iran?

Because he's a narcissist and wants to look good. It's a mental illness so the thought process isn't always rational about everything such as how to conduct himself, a reasonable amount of tanner, etc even if he is a president. 

A lot of them are too old, but they should also be demanding that any children they have over the age of 18 should be heading down to their nearest Army Recruiting Station and sign up, and tell their recruiter their first choice after Basic Military Training is OSUT School at Fort Moore (formerly Fort Benning).  Same thing with the children of any members of the executive, legislative, and judicial branches who support this mess.

And while we're at it, drop the whole administration on Iran.

I should have added that he does have ancestors from 🇮🇪 and 🇩🇪 but Trump's father was born in America. Still, messing up something this big is certainly a bad sign. 

His grandfather fled to the U.S. to avoid service in the Bavarian Army.