The TSA agent sees you and your eight ounces of Living Proof Perfect Hair Day shampoo. Don't think that the X-ray machine ignored the fact that it's more than four ounces over the acceptable limit. Now you have to resign yourself to a whole vacation with hotel shampoo, something even Kristen Stewart doesn't enjoy. For you, the person who likes to live on the edge of TSA fluid regulations, Net-a-Porter has created the Summer Kit. It has travel sizes of popular products — including Amazon-inspired shampoo and conditioner from Rahua, Verso's retinol-infused day cream, and Ren's Moroccan Rose Bath Oil, and a sampler set of By Kilian perfume. There's even an eyeliner, should you get the urge for an Alexa Chung–style cat-eye.
Net-a-Porter, The Summer Kit, $75 at Net-a-Porter.