Drink water for your skin

I drank one cup at home before going to work this morning, and I've had five cups so far.

I think I've had quite a bit to drink. It's a hassle to go to the bathroom, but

It's hot, so I'm sweating a lot and thirsty, so I'm looking for something easy.

It's water, haha. I wish I could drink water often, even if I have to make a point of it, so that my skin becomes soft and smooth.