I'd like to know who brought chilled items and skincare products from home to Korea?

Hi! Is anyone else planning a trip to Korea for beauty treatments and wondering what to bring for post-treatment care? I'm thinking of bringing cooling masks and moisturizing gels from home to help my skin heal faster. In the initial period after a treatment, my skin often feels irritated and needs cooling supplies.

Most importantly, I'm unsure whether I should buy these items in Korea or bring them from Thailand. Are they really easy to find in Korea? And what should I need initially? Has anyone successfully brought skincare products from Thailand like this, such as scar-reducing sheets or masks?

I'd love to hear from those with experience about how much I should actually bring, or if it's enough to find everything in Korea. Please share your advice in the comments. Thank you!