Wellington Fragrance offers a variety of fragrance products, including essential oils and fragrance oils. The products are made of different ingredients, some of which are natural, while others may be synthetic. For example, the Organic Peppermint Indian Essential Oil is described as a "100% Natural Product Contains No Artificial Or Synthetic Ingredients"

. On the other hand, the IFRA certificate for a specific fragrance product mentions that it "contains ingredients which are NOT considered GRAS, Generally Regarded as Safe"

. The products may contain allergens as well, as indicated in the EU Allergens Listing for a specific fragrance product

. The website emphasizes "High Quality Fragrance Oils" and "Clean Ingredients"

. If you need specific details about the ingredients or materials of a particular product, it's best to refer to the product's page on the Wellington Fragrance website or contact their customer service for more information.