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Copper is naturally found in the body. Copper is responsible for the formation of melanin in the skin. Melanin is a sun modulator. It's what makes the polar bear white and the grizzly bear brown. Everyone has melanin.
Melanin is responsible for helping us take in the sunlight and converting it into energy for us to sustain ourselves. Melanin is also found in our pineal gland (Third Eye) and it is responsible for why we have dreams, why we dream in color, why we have psychic abilities, astral project, remote viewing, etc...