Online Challenge Question—Week 8

Week #8: Of plants and tattoos

Question: Henna tattoos, or mehndi, are designs made on the body using a paste from the ground leaves of the henna plant, and have been a part of many cultures—including Hindus, Christians, Muslims, Jews, and others—since the Bronze Age. Unlike real tattoos, which are literally surgical insertions of pigment beneath the skin, henna tattoos are temporary (lasting one to three weeks) and rest on the surface of the skin. Can you guess how the henna designs stick to the surface of your skin?

  1. Mix with the oil on the surface of your skin.
  2. Bond with proteins in the layers of your skin.
  3. Grow in between the layers of your skin.
  4. Chemically change the pigment of the skin (like a sun tan).

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