Although similar to the other eucalyptus species, Eucalyptus Smithii s considered to be the mildest of the eucalyptus oils and appears to be better tolerated by the skin. It can be used as a component of preparations for relieving congestion and joint & muscle aches. Eucalyptus Smithii works well as a room disinfector when used in a diffuser. This variety of eucalyptus is considered to be better for children and sensitive people. Blends well with: Pine, thyme, lavender, rosemary, marjoram, cedarwood and lemon.