The using the heat vision to shave is the most common explanation In the comics
he uses a bit of the ship - presumably as the heat would melt any earth metal or mirror
Sometimes the mirror works - Dean Cain version is seen shaving this way
The haircut explanation has never really been given - keeping in mind Clark grew up on the farm from a baby and they never would have been able to cut it
So "it doesn't grow" is the only way round this
Why they don't just have the beard not growing, as in it never grew from when he hit puberty - doesn't grow on Earth like his hair doesn't
Supergirl grew hair hair long before she arrived, and it now never grows past that length, and is never cut
Now - pubes and pits
We see Superman has a hairy body in the latest version - leave it as that
Can Supergirl shave her legs and armpits with heat ray or does it just not grow - if Superman's face beard grows, so would her body hair
And does she have a big 70s style bush - or can she heat trim it to a neat triangle, landing strip, or just take it all off?
Melissa is the only Supergirl actress to have nude pictures posted - so we can use her as a first reference
And yes - we have looked everywhere for nude Laura pics .
