Washing face at night. Alternative to soap?/is soap ok?

Sooo. The only "industrial" product I wear is sunscreen. I got in the habit of putting it on first thing in the morning. It has been positive to my appearance so far.

The issue is that I only get rid of it with soap once I take a shower, and I believe I'm starting to see the consequences (hyperpigmentation) 😅.

Anyway, I'll get in the habit of washing it off at night before sleep. Any advice on doing this? I don't have a cleanser, but I've read that just soap could be too harsh on the skin. Any advice?