You can often get 4oz bottles for the price of a 15ml bottle elsewhere.
The search results are often cluttered with "Fragrance Oils" or "Scented Oils" that aren’t actually safe for topical use or therapeutic diffusion.
Rating: ⭐⭐⭐⭐☆
If Rose, Sandalwood, and Jasmine are the same price as Lemon or Eucalyptus, they are almost certainly fake. Those florals are incredibly expensive to produce.
Some third-party sellers dilute their oils. I always look for a GC/MS test report (a chemical breakdown) in the product images or description to verify purity.
It should list exactly one ingredient (e.g., Lavandula angustifolia ). If it says "fragrance" or "perfume," it’s synthetic.