The 41-year-old actor - who first found fame as a child - believes Hollywood's beauty standards have changed markedly in the past 20 years.
Appearing on Good Housekeeping's Home in Five series, Johansson reflected: "Actors are able to express their personal style on the red carpet much more than they ever did before."
The Jurassic World Rebirth star recalled feeling under intense pressure to look a certain way during her younger years.
"There was such a standard on how movies stars were supposed to look. It was unachievable and it didn't allow for personal style in the same way (it does now)," she said.
The Oscar-nominated star observed that actors and actresses now felt much more comfortable wearing casual attire in public.
"Now at the airport or on the train, you see people wearing pimple patches and eye masks and whatever they want to feel confident," Johansson said.
She previously admitted feeling typecast as a sex symbol during her younger years.
The actor is one of the biggest names in Hollywood, but Johansson felt she was only valued for her "desirability" during her early days in the movie business.
Speaking to The Sunday Times newspaper, Johansson said: "When I was younger, a lot of the roles I was offered, or I went for, had their ambitions or character arcs revolving around their own desirability, or the male gaze, or a male-centred story."
Johansson - who is married to comedy star Colin Jost - has overcome the issue by rejecting "unfulfilling" roles and patiently waiting for the right opportunities to come her way.
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