I too am looking for a daily shampoo for oily hair. Happy to hear recommendations.
I'm about to try Nizoral for use every other day, but this is specifically to deal with the hair loss problem by getting rid of DHT which apparently causes hair to drop.
For daily use, Pura d'or Premium Organic Argan Oil Anti-Hair Loss Shampoo has been recommended online. It's not cheap, but the Amazon ratings are high:
http://www.amazon.com/gp/product/B0...rue&ref_=ox_sc_sfl_title_2&smid=ATVPDKIKX0DER
It's free shipping if you buy 4 bottles (or any other qualifying products that add up to >US$125)
QOO10 sells it for S$70+. If you buy a single bottle from Amazon it's about S$68 with shipping.
But to deal with oily hair specifically, the quick fix is dry shampoo. It's essentially spray on powder that absorbs the oil. Think of it like a blotter for hair.
It works quite well. Might suit your purposes. Watsons sells it for about $12 a can. Brand's Bastiste and it comes in many scents. Q0010 has it slight cheaper.