What skincare products did you bring when you came to Korea for beauty treatments?

Hi everyone! This is my first time in Korea for a treatment, and I'm currently thinking about aftercare products. I've heard that the first few days after the procedure are especially important, so I'd like to pack some things in my luggage. I'm considering bringing my own cooling masks, silicone scar patches, and soothing gel.

I'm not sure if these are readily available in Korean drugstores, or if the products here would be more suitable. Have any of you been here before? Could you share what you packed? Did you bring everything yourself, or buy it after you arrive?

I'd really appreciate hearing your experiences because I want to make the recovery process as comfortable as possible. Thank you!