Post-Beauty Trip Skincare Stockpiling Sharing — What products do you all bring?

Hi everyone! I'm planning a short treatment in Seoul soon and I'm struggling to decide what skincare products to bring. I've heard that using the right products during post-treatment recovery is really important, but I'm unsure what to prioritize.

I'm wondering if I should bring some cooling masks, silicone scar patches, and soothing gel from China beforehand? Or are there any good products available at local pharmacies that I can buy without the hassle of bringing them from home? I'm a little worried that if I buy them on-site, I might not be familiar with the products and won't know which ones are truly suitable for post-treatment use.

Have any of you ladies who have been to Korea for treatment before and could share your skincare experiences? How do you usually manage your product selection? Do you bring everything yourself, or do you buy everything on-site? I'd especially like to hear what kind of products you consider essential! Thanks!