Trinity Candle Factory Premium Scented Kumquat - Fragrance Oil - 1/2 oz. - Concentate. This fragrance oil can be used for many things including wax tart refresher oil, fragrance warmers, oil warmers or diffusers, light bulb rings, refresh your candles if needed. etc.. This scented fragrance oil is a very strong concentrate it does not take much. Best used with fragrance oil glass dropper. This Kumquat candle is just different. The smell of the kumquat is a nice sweet citrus and very fruity. Very unique and very strong. 100% Satisfaction Guarantee.