I'd like recommendations for products that make my hair last longer.

It is definitely the rainy season... summer... ㅠㅠㅠ My hair is on the longer side, but it doesn't really suit me when tied up, so I usually wear it down. Even though it isn't very thick, it is long enough that if I just walk around, it looks like a messy ghost... lol. So, I almost always style it with a styling tool when I go out, but with the rain coming and going lately, my hair is completely falling apart due to the humidity... ㅠㅠㅠ I'm thinking of using hairspray to hold it in place, but are there any products that don't get stiff and greasy when sprayed and don't have a strong scent?