HerRoom Response: This garment is classified as "extra firm." This classification is to be worn no more than 3-4 hours tops because it is made to be so firm. The itching was actually your body telling you it needed to get out of this compression garment. To your point about the hem showing through clothing, the solution would be to select a bodysuit instead of a camisole.
KAE from United States
Sheer Shaping Camisole