Did you buy any preventive products on your recent trip?

I'm going to South Korea for cosmetic treatments for the first time. During my trip, I'm planning to get facial care, among other things. I'm wondering what kind of post-treatment products I should bring.

I've heard that people usually bring cold packs, silicone scar sheets, or seaweed gel. I'm not sure which of these would be most valuable for my situation. Since I have limited recovery time due to my travel schedule, how should I prepare in advance? Did you bring your own supplies, or did you purchase them there? I feel like some items might have issues with air travel.

This seems like a good question for those who are unsure about exactly what type of post-treatment products to bring. I'm seeking advice from those with experience!