Two of my must-have hair products for the colder months are Bumble & Bumble Hairdresser's Invisible Oil and Primer. My hair tends to dry out pretty easily this time of year, becoming more fragile and delicate, so I find that it's super important to take the extra steps necessary for added nourishment and protection. The primer is a great multitasking pre-styler, so use this first if you have plans to style with other products and tools. Both the oil and primer contain six super lightweight oils (grapeseed, safflower seed, sweet almond, macadamia nut, argan, and coconut) that work to soften & smooth, detangle and de-frizz, and protect against breakage from heat & UV damage. By putting the primer in a spray bottle, Bumble & Bumble allows for a light application that will not weigh your hair down. In fact, sometimes I'll spritz it into my damp hair as a leave-in conditioner, and be on my way! With the oil, on the other hand, a little goes a long way, so careful not to over apply! It's my go-to in evenings (post-shower), so that my hair can soak up the oils overnight while I sleep, and look fresh and healthy come morning!