[Hair Care] Oily scalp + humid city = nightmare. Help a greasy gal out!

Help! I have oily scalp and no matter what I do, my hair gets greasy within 24 hours of washing. Living in a super humid city isn't helping either. I'm honestly so done with my scalp and hair at this point. I've spent way too much money trying different products and nothing seems to work. Anyone have product recommendations that actually helped? Open to home remedies too - I'm desperate at this point!