Does the performance of Rejuran really depend on the director's skill?

Lately, my skin feels so dry and lacks elasticity.

I heard a lot of people get Rejuran, so I've been looking into it.

There are a lot of positive reviews, but also a lot of negative ones about it being painful, so I'm conflicted.

Since I'm a working mom, it's not easy to visit a dermatologist often.

My biggest question is how long the effects last after just one session.

I've also heard the doctor's skill is really important... Is that true?

I've heard that sedation is a popular option, but I'm not really willing to go that far.

I live near Hongdae, so please let me know if there are any good clinics in that area.