When you get beauty treatments in Korea, what do you usually bring back for aftercare?

I've just decided to book my flight to Korea for next week to get some minor cosmetic adjustments, and I'm currently worried about the aftercare. I want to have everything ready so I can take good care of myself right after I get home, because I know the recovery period is very important.

Does anyone have experience buying items like cooling masks, wound care patches, or soothing gels there? I'm not sure if I should buy them in Vietnam beforehand or wait to buy them in Korea, as the quality there seems better. Or should I wait for advice from the person performing the procedure before deciding? I'm also worried about my luggage being too heavy if I bring too many things 😅

Has anyone had a similar experience? Please share your insights! I want to make sure I'm taking the right steps for the best possible results.