The only true way to get rid of those split ends is by having them cut off.
Look at your styling regime and see if you can identify what is causing them. More often than not it is mechanical damage, brushes combs, and more recently over the years abuse of electrical styling items. ...More >
Ensure you use electrical styling products that help retain as much moisture as possible like the FHI platform if you use a straightening iron.
Also make sure you use professional home hair care while styling to help protect your hair while styling. L Oreal Professional techni.art hot style constructor is a great product while ironing your hair and techni.art crystal gloss will give it a great polish.
If hair is becoming too greasy try following this simple routine.
On the last rinse after shampooing use cool water.
This will cool down your scalp and aid sebum production. While shampooing ensure you use a light massaging technique has if you are too heavy handed it will stimulate sebum production.
Last but not least use a light spray on conditioner and try as much as possible to keep it away from roots.