Tea tree oil from the units medicos cleared it up. After World War 2 the world turned to synthetics and away from natural products. The 1970's resurgence back to nature found the natural advantages again appreciated. The good oil has been used in the treatment of mouth ulcers and abscesses, conjunctivitis, acne, boils, impetigo, psoriasis, dandruff, vaginitis, thrush, septic wounds, cuts, and abrasions, catarrh, pyorrhoea, sinus congestion, carbuncles, pus filed infections, ring worm, etc., and to help relieve pain of burns, scalds, and haemorrhoids. Helps to rid hair and body of lice, ticks and leaches.
Oil of lavender is another.
Tea Tree Oil is a natural base for detergents that will care for hands. It takes 100 tons of leaves to distill one ton of the clear slightly yellow pure A' grade oil. It is a concentrated oil, and the temptation to use straight from the bottle may cause irritation if used a full strength on sensitive areas. Some people can use it straight on nasal tissue to clear sinuses, but a few drops should be mixed with a bland oil such as baby oil, olive oil or Aloe Vera jelly. As an inhalant add 5-10 drops to steaming hot water.