ETA: above included to add context
Thank you so much for the reassurance!
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Just playing Devil's Advocate for the moment: it's not just man-made products that are heptatoxic. Many natural compounds are very dangerous indeed. For example: oils high in safrole (e.g. Sassafrass, Camphor, many members of the Cinnamomum family), can be argued to cause liver damage, while oils rich in thujone (most Sages) can cause bio-accumulative nerve damage.
Not all synthetic ingredients are dangerous. Conversely, not all natural ingredients are safe. Dosage and application methods are also important factors, here. It is not sufficient to make the generalisation that man-made fragrance chemicals will make you ill, and imply that natural ones will not.
Thus, I don't know how you can be "reassured" with one consumer's say-so and little in the way of concrete facts. This thread is composed entirely of speculative commentary, personal interpretations and assumptions.
One way to be truly reassured about your well-being, is to understand which synthetics and natural ingredients might aggravate your condition, and if a low topical dosage is a consideration, then seek assurance directly from the manufacturer that there is no cause for concern.
If you are concerned about your health, don't listen to us but rather communicate directly with Beth. She is more than qualified to address your concerns.
Just my 0.02 euros.
Iain.