Good products for oily scalps

Until now, I hadn't done any separate scalp care and just used whatever hair products I had on hand. Since it's summer, my scalp seemed to have gotten oilier, so I started looking around and purchased the Steam Base Tea Tree Scalp Water Scaler. I use this product with shampoo or before shampooing; afterwards, it feels really refreshing and seems to exfoliate. You don't spray it on your hair, but rather hold it against your scalp and spray it; it feels really cool when it touches the scalp. I use it about 1-2 times a week. I bought the small size instead of the large one just in case it didn't suit me, but I checked the website and it's great to see that they sell refills separately.