All home fragrance and cosmetics must be CLP compliant (classification, labelling and packaging), a CLP label must contain any ingredient that may cause an allergic reaction so if someone was to an allergic reaction the label can be taken to the hospital/doctors and they will know how to treat it (it’s unlikely that you would have an allergic reaction to candles or wax melts because they should not come in contact with the skin), the CLP must contain contact details so you can contact the company for the safety data sheet if there was an allergic reaction, these are a legal requirement for safety reasons, if you was buying from a company who is not CLP compliant their insurance will not be valid. Please make sure when you are buying home fragrances and cosmetics they are from companies that are CLP compliant.