Does Water Really Hydrate Your Skin?

Yes — but it can also dehydrate it.

It sounds surprising, but it’s true: after cleansing, if you leave your skin bare, water evaporates quickly and takes your natural moisture with it. That’s why Korean skincare highlights the importance of applying hydration immediately after washing.

The “3-Second Rule” in Korean Skincare

One of the most popular K-beauty tips is the so-called “3-second rule.” According to this method, you should apply a hydrating product — most often a toner — within three seconds after cleansing. This quick step helps lock in moisture before it escapes, keeping the skin soft, plump, and balanced.

How to Apply the 3-Second Rule

1. Cleanse your face with your favorite gentle cleanser.
2. Pat dry with a towel, but leave the skin slightly damp.
3. Within 3 seconds, apply your toner with your hands or a cotton pad.
4. Continue with your serum, moisturizer, and sunscreen as usual.

Practical Tip

Keep your toner close to your sink or mirror. This small habit will remind you to apply it right away, turning the 3-second rule into an effortless daily ritual.