Youngjin Wi

Retinol: Is More Concentration Always Better?

Safe Retinol Dosage: What Matters More Than Concentration Is the Order Your Skin Can Accept It.

How Often Should You Really Use Retinol?

Using retinol every night doesn't double your results — it can backfire. Here's how skin turnover actually works, and how to build a frequency schedule your skin can handle.

Radiesse: Does Diluted Mean Less Effective?

The dilution ratio of Radiesse completely changes the lifting intensity and naturalness. Here's the breakdown of the differences between concentrated and diluted formulations.

Restylane vs Juvederm: Same Ingredient?

Juvelook Eye: Can Regular Juvelook Work Too?

Juvelook and Juvelook Eye are the same brand but differ in formulation, concentration, and particle size. Here's why you shouldn't use just any product under your eyes.

Juvelook Skin Booster vs. Volume: Same Thing?

Juvelook Skin Booster and Volume both contain PDLLA, but their different results stem from differences in particle size and concentration.

MD Code Filler: Do You Know Where It Goes?

Why MD Code Filler Is Different from a Standard Injection — How a Facial Map Makes Lifting Results Predictable

Oligio X: Is It Just Another RF Lifting?

Dr. Wi Young-jin explains exactly what sets Oligio X apart from conventional RF lifting procedures, and why the generation of technology makes all the difference in your results.

Ultherapy Pain: Is Sleep Anesthesia Necessary?

You can manage Ultherapy pain without sleep anesthesia. Here's how our pain-free anesthesia system and Cooling Care make your procedure comfortable.

Oligio X: Can You Wash Your Face Right After?

Oligio X is a non-invasive procedure that allows face cleansing and makeup immediately afterward — here's why you can walk right back to work after your lunch break.

Juvederm Voluma: Does It Lift the Jawline?

Restoring cheek volume with Juvederm Voluma isn't just about filling — simply injecting it doesn't create a lifting effect. The injection technique is what makes all the difference.

Private Room Laser Hair Removal: Worth It?

Before looking at the equipment, there's something more important to check when choosing a laser hair removal clinic. Whether or not you get a private, single-person treatment room can make all the difference in your results.