I'd like to ask what products I should bring for post-beauty treatment care in Korea?

Ladies who have been to Korea for beauty treatments, did any of you bring your own self-care products from home? I'm going next month and worried about post-treatment care because they say it's important to prioritize skincare from the first day.

I'm thinking of bringing some things, like a cooling mask for after treatments, a gentle gel, and silicone patches for redness, but I don't know where to buy them or what are the truly essential items. Some people say that products in Korea are reasonably priced, but it's convenient to bring them beforehand.

If you've been there before, could you recommend what are truly essential items and what you might not need to bring in large quantities? I'd appreciate advice from those with real experience. 🙏