Packing for post-beauty treatment recovery in Korea. Can anyone recommend anything?

Hello, my name is Gift from Thailand. I'm planning to go to Korea for beauty treatments next week and am currently preparing items for post-treatment care. However, I'm still unsure about what I should bring from Thailand or if I should buy them directly in Korea.

I'm wondering if anyone has packed cooling masks, scar sheets, or various soothing gels for post-treatment use for their travels. Have you used any types that genuinely made a difference, or do you find that Korean products are better? I'll be on a long flight, so I believe good preparation will help with a faster recovery.

I'd love to get some advice from those who have been before. What should I prepare, or are there any specific areas I should pay extra attention to? Thank you in advance!