Why is the skin on my face turned red?

It sounds like the beginnings of rosea. Do you smoke?

No never..

Did you wash your face with hand or bath soap? I think some of those soaps can irritate facial skin.

I use a jojoba meal and oatmeal facial mask and scrub. After I rinse that off, I use an aloe vera-based moisturizer.

Yes, it could be rosacea or you may just have very reactive skin as I do. nothing to worry about but you might want to see a dermatologist.

Maybe I’m underreacting, but maybe the water was just too hot?

Allergic reaction
water too hot
something you ate

This is a very common reaction to a dairy allergy. Try cutting all dairy from your diet for a week or so, and see if it clears up.