Are there any dermatology clinics in Seoul you would recommend for someone who has hardly applied sunscreen?

As mentioned in the title, I rarely, if ever, used sunscreen in my daily life.

My skin seems to be getting darker gradually, and I'm also worried about skin cancer when I hear such stories.

Is there a dermatology clinic or hospital in Gangbuk-gu that is considered the best, and have you experienced effective results there?

I would like to try it when I go later.

Whether it's hospital treatment or dermatology treatment.

Thank you