Rolón this can be applied directly on the skin: Tree properties you will not be any known toxicity or side effects, does not irritate the skin so it does not entail any risk to health. The tea tree oil is only used esterior therefore should not be ingested ever. The tea tree oil has an antiseptic effect threefold: it acts against bacteria, fungi and viruses is also bactericidal, fungicidal, antiviral, healing, balmy antiinflammatory, expectorant, and deodorant. The antiseptic, fungicide and anti-acneicas, grains.