Quite so. You should even get double your ticket cost back. It’s the only way the studios will learn!
A famous example of this is an anecdote I once read about Charlton Heston. When a role (I don’t remember the movie) called for him to be bald, he refused to remove off his hairpiece for the job. Instead, he made the producers create a fake bald-cap for him to wear over his rug!
Now that’s vain!
Dustin Hoffman says it was “A Man for All Seasons”
We were watching the Star Wars marathon on Labor day. I just then noticed that in the scenes of RotJ on Endor, Han Solo was wearing a camouflage trench coat when every one else had on ponchos.
From* The World of Star Trek:*
[Discussing the episode* The Deadly Years*]
That would seem to be a very deliberate design choice, and not a vanity thing on the part of Ford. Han Solo always had the low holsters for a quick-draw (something he couldn’t do as effectively in a poncho). The motif was carried through as part of the character’s iconography - he’s supposed to harken to a show-down-at-high-noon cowboy, and the trenchcoat is supposed to be reminiscent of a duster.
Compare these pics of Solo: pic #1 and pic #2, and Han Solo toy in trenchcoat
To Gary Cooper in High Noon and this still from Jonah Hex.
I don’t remember any other trenchcoats on Endor, but some of the toys have Rebel soldiers in trenchcoats as well.
The way I remember it, the other guys in Basic griped about the non-haircuts Murray and Ramis got, which implies to me that they bribed the barber.
A lot of actors may have very good reasons for not wanting the shaved-head look. Shoots may take quite a while, and if re-shoots are needed, the hair may be off for a year. That can really mess with other stuff in the actor’s schedule. I definitely wouldn’t want to do it unless I knew, period, that I wouldn’t have to bother with anything else going on for a long time thereafter. And even then I might have some formal events or something that I’d at least prefer to have my full head of hair for. Even giving a certain amount of human vanity, it’s no great shame to avoid a total head-shave. I can’t blame anybody who avoids it if they can.

I’ll never get over Matt Damon’s perfect stark white teeth in his “me and my brothers” story in Saving Private Ryan
I’ve never been to war…but there is no way your entire body is covered in mud, and your teeth are THAT bright
Matt Damon is the last actor I would think of as vain considering what he did to himself and how bad he looked as junkie Ilario in Courage Under Fire. He doesn’t seem to take himself very seriously either regularly mocking himself in movies and on TV.
William Goldman tells a story about Dustin Hoffman in Adventures in the Screen Trade. In Marathon Man his character was supposed to wake in the night, grab a torch from his bedside table and shine it upon Roy Scheider, who’s crept into his room. Hoffman argued for over an hour that his character wouldn’t have a torch by the bed. Goldman said that an actor of Hoffman’s ability should be able to justify anything to himself; he was simply scared that his fans would consider him a coward.

Matt Damon is the last actor I would think of as vain considering what he did to himself and how bad he looked as junkie Ilario in Courage Under Fire.
Plus, hold that picture up next to one from THE INFORMANT!
A note for Americans who are confused by don’t ask’s post: A “torch” is a flashlight.