I recommend dry shampoo.

As someone with an oily scalp and bangs, in a summer like this, no matter

Even if you wash your hair with shampoo that is good for oily skin, use a hair straightener, and use rollers

My hair got oily really fast, and I couldn't exactly wash it outside either.

So, I also frequently use Innisfree No Sebum, but

I use dry shampoo often these days. I bought a small one at Olive Young and carry it around in my bag.

I spray it occasionally, and unlike No Sebum, dry shampoo is great because it has a cooling sensation!