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Q&A Would structural colouring work for making hair green, blue and or grey?

Today I was thinking about how to make an elf who naturally grows blue hair. Thinking about this I came up with the idea of coloring the hair using microscopic eyes like with blue, green and gray e...

1 answer  ·  posted 6y ago by skout‭  ·  last activity 6y ago by skout‭

Question biology