Why did he dye his hair at the end of Squid Games?

Why did he dye his hair at the end of Squid Games? It’s clear that Hwang Dong Hyuk’s main intention in giving Gi-hun red hair was to signal to audiences that he is deeply changed from who he was at the beginning of the season, meaning that audiences shouldn’t expect the same goofy, wishy-washy, reckless character they came to know and love.

It’s clear that Hwang Dong Hyuk’s main intention in giving Gi-hun red hair was to signal to audiences that he is deeply changed from who he was at the beginning of the season, meaning that audiences shouldn’t expect the same goofy, wishy-washy, reckless character they came to know and love.
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