Q&A: is cedarwood oil safe in pregnancy?
Nancy B. writes Hello Robert, I met you at the AIA conference in Denver, CO 4 years ago. I follow your blog and have subscribed to your posts and comments. You are such a wealth of knowledge and I love the way to combine research and common sense. I have a question...Q&A: spilled essential oils discolor skin
Joanne L. writes: Hi Robert, I was wondering if you have any thoughts on the following – a short course student of mine works in an essential oil / fragrance suppliers. Recently she poured an unspecified amount of Lemon Scented Myrtle oil over her leg into her...Q&A: Tea tree oil & hospital superbugs
Q: I have heard that tea-tree oil is one of the only things that can be used to help combat the superbug in hospitals – is this right? A: I presume you are referring to methicillin-resistant Staphylococcus aureus, or MRSA (there are several other...Q&A: Lavender oil and cancer
This question combines two recent topics – lavender oil and cancer – and shows that strange information continues to swirl about… Beverley H writes Hi Robert One of the first references I use when looking up contra-indications is your book with Tony...Q&A: Ylang-ylang safety in perfume
Cory T asks What do you think is the upper safety level for Ylang-ylang in an oil based perfume? I have looked at the IFRA (International Fragrance Association) guideline and I’m not sure what to think about it. Thanks if you have an answer. I would appreciate...The Tisserand Institute
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