Many regular tea drinkers are unaware that used tea leaves actually have numerous secondary uses. Here are some examples: 1) Continuing to steep used tea leaves and using the water to wash hair can make hair black and shiny; 2) Drying used tea leaves and heating them can eliminate pungent smoke odors; 3) Soaking used tea leaves in water for several days and watering plants at the roots can promote plant growth; 4) Drying used tea leaves and scattering them in damp areas can reduce moisture; burning them in toilets or drains can remove foul odors and repel mosquitoes and flies; 5) Sprinkling tea leaves on carpets and then sweeping them up can help remove all dust; 6) Soaking feet in water with used tea leaves can eliminate foot odor and may aid sleep; 7) Soaking burned fingers in leftover tea can alleviate burning pain; 8) Wiping greasy pots, bowls, or wooden/bamboo furniture with used tea leaves can clean them effectively; 9) The vitamins and tea polyphenols in tea are beneficial for skin care; washing the face with water steeped with used tea leaves can smooth the skin and prevent spots and dullness; 10) Placing dried used tea leaves under shoe insoles can absorb moisture and eliminate odors; 11) Using dried used tea leaves as pillow stuffing can help reduce internal heat.