Orange oil Great quality I use the oil in the aroma lamp. I mix lavender and orange oil in a certain ratio and so get a great, mood-enhancing Provencal scent for my aroma lamp. The warning signs make for me is not a problem, because the warning signs on all essential oils are required by law. Harmful for example, is among other things! Therefore, on the bottles, because in almost all essential oils highly concentrated alcohol is contained, the (applied pure on the skin) when misuse, the skin can dry out or the abusive ingestion cause severe damage, etc. One should inform before buying about essential oils (Book, Internet) to halt.