Only oil soluble is added to wax. Thus use oil based perfume for your all types of candles. Candle making perfumes are, infact specially designed for long lasting as well as delicate aroma, which is neither heavy nor overpowering. Try to use the best method of using perfumes so that it may not evaporate.

Remember that perfume does tend to evaporate. Never let a perfumed candle unpacked for long hours.
Different types of perfume available in small & big packings.