Bumble and bumble Hairdresser's Invisible Oil Heat/UV Protective Hair Primer Leave-In Conditioner Bumble and bumble Hairdresser's Invisible Oil Heat Protectant Leave-In Conditioner Hair Primer is our best seller. This multitasking leave-in conditioner, infused with our Featherlight 6-Oil Blend, hydrates, reduces frizz, softens + adds shine. Plus, it helps provide nourishment and smoothing, and protects from heat tools up to 450°F/232°C. How it works Our Featherlight 6-Oil Blend helps provide conditioning, moisture, nourishment, softening, and smoothing to hair. What's in the featherlight blend that started the trend? Coconut Oil, Argan Oil, Grape Seed Oil, Macadamia Nut Oil, Sweet Almond Oil, and Safflower Seed Oil. Key benefits Reduces Frizz UV Protection Idea for Ideal for hair types seeking a multitasking leave in treatment. From the pros Some areas of the hair may be more (or less) porous than others. Take some time massaging into hair after spraying to help absorb evenly.