DIY bangs straightening

I've had extremely straight hair my whole life, so I never even considered getting a straightening treatment, but perhaps because I'm getting older, my bangs are turning slightly curly.

I didn't want to go to the hair salon because of my bangs, so I looked it up and found that people straighten their hair themselves.

I bought it at Daiso and tried using it, but it wasn't as easy as I thought.

I will come back to leave some information once I get a little more used to it.