I’ve seen some women (usually Asian) in videos who take off all their routine makeup and don’t just look like a different person, but like an entirely different ethnicity. it’s not always the obviously tiny difference between Clark Kent & Superman.
And Clark Kent and Superman have massive differences, not just the laughed at glasses thing. There’s things like changing his demeanor, the fact that Kent is several inches shorter because he both slouches and uses his super strength to compress his own spine with his back muscles, constantly slightly vibrates at super speed as Superman to soften his features, etc