They say sebum cannot be washed away with a mildly acidic cleanser.

The reason we wash our faces is to remove sweat, dust, sebum, and the like, right?

However, since our sebum is acidic, I heard that it is difficult to properly remove it with the mildly acidic products that are trending these days!!!

It is recommended that you avoid using mildly acidic cleansing products, especially if you have oily skin.

I didn't know either, but I was just using it thinking, "It's mild." Whatever it is, what works well for you is important!