How is the best way to use retinol?

Retinol is a form of Vitamin A and is the most popular and famous ingredient, to the point where it is considered the representative anti-aging ingredient.

It is said to be mainly good for people with wrinkles or loss of skin elasticity.

So, I heard that it is good to start using it in your late 20s to early 30s to prevent skin aging.

However, I’ve heard that retinol can cause skin problems if used incorrectly. How should I use it properly to avoid breakouts?