This may come as a surprise to many, but both natural and synthetic fragrances can contain allergens.. except when it states on the perfume ingredients label that the fragrance is indeed allergen free. The fact is that natural essential oils can still contain allergens. Just like some people who have allergic reactions (Hayfever) to certain 'natural' flowers in the summer. Some companies like their customers to believe that Natural means allergen free when this is simply not true. Please also beware of some bloggers who scaremonger people with their claims that all synthetic ingredients are bad and that only natural ones are good.. these people (bloggers) are simply not qualified in cosmetic chemistry to make these claims and assume that natural fragrance would prevent all allergic reactions such as headaches, etc. The fact is that both natural and synthetic fragrance ingredients can cause, for example: a headache in some individuals with a sensitivity to certain ingredients. Allergens are listed on all perfume ingredients labels of any designer or niche brand including ours. Usually an alcohol based perfume label will start with the words: Alcohol Denat, Parfum, Aqua .. the words that follow are a list of ingredients that contain possible allergens that have to be legally listed on the perfume label, if they are present at 0.001% or higher. (Most people believe these are simply a list of ingredients, but this is not the case. We simply want to educate our customers about what is listed on all perfume packaging labels, no matter which brand it is). If a brand does not include an ingredients label on their product be wary and ask yourself what are they hiding! They are also breaking the law by not supplying a compliant product label. The UK & EU are heavily regulated when it comes to the listing of allergens. The listing of allergens does not mean that you will be affected. It is merely required by law for these to be listed on perfume labels if they are present at 0.001% or higher. Every perfume brand including the big designer ones will have some of these allergens listed on their perfume packaging. (If a perfume that you have purchased, elsewhere in the past does not include a label on the box, that company is breaking the law and possibly keeping you in the dark about what's really in their perfumes.)