How can I add fragrance to candles effectively?

To add fragrance to candles effectively, you can use high-quality fragrance oils specifically designed for candle making. Measure the fragrance oil carefully according to the recommended ratio for the type of wax you are using. Add the fragrance oil when the wax is at the right temperature, usually around 185-195F, and stir gently to ensure even distribution. Allow the candles to cool and cure properly before burning to fully enjoy the fragrance.