This is for the non-americanos-cause it is old news to you. Often when danish people travel in the US, they go to stores that they have seen in movies like Macy´s, Saks & Barneys. But these stores are expensive compared to what you can find in the US. My advice is to rent a car so your mobility isn´t limited, becase a lot of the good stores are located near the highways. Stores called TJ Maxx, Marshalls & Ross- you will love. They have everything from shoes to kitchen items. They sell different brands but for much less. Here are some of the beautystuff i bought.
Redken shampoo 1 liter & conditioner 1 liter 30 $. In Denmark I would pay 70 $ for the shampoo & another 70 $ for the conditioner.
Shiseido Benefiance balancing daytime protective emulsion 25 $ & Shiseido Benefiance balancing softener lotion adoucissante 20 $. In danish stores I would pay what would be 130 $ & 90 $.
MOR soaps. They are so pretty & smell great. I paid 7 $ pr. soap -on their webshop they are 15 $ & in Denmark they are 24 $.
As you can see I saved a lot on these items. I also bought a box containing two OPI nailpolish´ for 10 $ & four small Essie ones for 10 $ also. And that was just the beauty department.