What items should I pack for post-beauty treatment care in Korea?

Hi! My name is Ja, and I'm planning a trip to Korea next month for beauty treatments. I want to be well-prepared for proper aftercare there. I think it's a good idea to prepare some post-treatment care items for home use, as there's a possibility of redness, slight swelling, or just needing some cooling comfort for my face.

I'd like to know what those who have been to Korea before packed. For example, masks that need to be kept refrigerated, mood-boosting gels, or even silicone sheets for scar reduction. I'm not sure if I should buy these things here or in Korea.

Does anyone have any experience with this? I want to be well-prepared before I get there. Thank you!