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Why does washing Platycladus orientalis leaves and duckweed make hair turn red?
The reason why the hair of Platycladus orientalis leaves and duckweed turns red after washing is that flavonoids in Platycladus orientalis leaves may interact with some components in duckweed to produce the effect of hair turning red. Flavonoids in the leaves of Platycladus orientalis have antioxidant effect and can prevent hair from oxidative discoloration. The ingredients in duckweed may interact with it, which promotes this antioxidant effect and leads to red hair.