For our drink inspired fragrances, we recommend to use 5 – 10% fragrance oil, therefore 50 ml of oil will fragrant 1 kg of wax. We recommend up to 25% fragrance oils for reed diffusers. We supply our fragrances in 50 ml , 125 ml, 500 ml, 1 Litre and 5 litre bottles. All of our fragrances are fully compliant with IFRA (International Fragrance Association) and RIFM (Research Institute for Fragrance Materials) regulations. All our fragrances are cruelty free, suitable for vegans/vegetarians and paraben free. All our fragrances can also be used in soaps, cosmetics and other applications, please see the IFRA certificate under the data sheet tab on each fragrance for more details on these applications.