How long does cheek/nasolabial fold filler usually last near Hongdae?

Hello! Lately, I have lost a lot of weight in my face, causing my cheeks to hollow and my nasolabial folds to look deeper. I often hear that I look tired. I am looking for a plastic surgery or dermatology clinic to restore my volume, and I am considering filler treatments, which offer the fastest and most immediate results. I am looking for a clinic near Hongdae Station, which is convenient for me to visit after work.

Since this is an injection procedure, I am most concerned about the duration of the filler's effect. I’ve heard there are differences depending on whether the product is domestic or imported, so I’d like to hear from those with experience on how many months it typically lasts. I would also appreciate it if you could share the approximate average market price and the dosage used for each area. If anyone has had natural-looking volume added, please share your tips or a review!