Discussions tagged with 'tea tree oil' Abdullah 1% or 2% sodium salicylate vs 5% tea tree oil comparison for acne. Abdullah replied 2 years, 4 months ago 2 Members · 2 Replies Advanced Questions billichemist Tea Tree Oil in ALS formula billichemist replied 9 years, 7 months ago 3 Members · 3 Replies Formulating Viewing 1 - 2 of 2 discussions