Kahuna Bay Tan DHA Booster Drops W Bronzer 8oz. Would you like to "Super Charge" the color guide for an Extra Dark spray on Tan? *Just add an increase to your DHA percentage with our Booster Drops! *Our drops contain the highest level of DHA (50%) of any other on the market, you only need 5 drops per 2 ounces of Solution to increase your DHA % by 1%. *Booster Drops can be used with any Spray Tanning Solution. *Contains not only DHA and Bronzers but is rich with moisturizers and skin-firming agents too. *Our 8oz size is priced much less than most 1 oz being sold today. What's in Them? Comfrey Extract Extract from comfrey is used in cell therapy treatments, face creams, and sun care preparations as a healing agent and moisturizer. An anti-inflammatory and antirritant, it Is reported to promote skin cell regeneration. Wheat Amino Acids Extracted from the embryo of the wheat kernel.