🔬 Discovery

Antiseptic properties of tea tree oil

Propiedades antisépticas del aceite de árbol del té

Date
1923 · confidence high
Place
Sydney, New South Wales, Australia
Credited to
Arthur Penfold
Field
Life & health

⚠️ Disputed: the sources disagree.

What was discovered

Penfold showed that the oil of Melaleuca alternifolia had an antiseptic power about eleven times that of phenol and promoted it as a disinfectant. The Bundjalung peoples already used the leaves as medicine.

The phenol coefficient was established with methods of the time; modern clinical evidence is limited. Indigenous use predates Western science.

What it led to

  • an Australian tea tree oil industry
  • use in cosmetics and skin care
  • studies of activity against bacteria and fungi

Links

Sources✓ verified 2026-11-04