Have a look at a hair material shader by Robert Ramsay that comes with many features and parameters.

Have a look at a hair material shader by Robert Ramsay that comes with many features and parameters that will allow you to get the hair you want. The pack will get you more control over stylised hair.

The pack can be bought for both Unreal and Unity (both versions will cost you £12.50).

Unreal Version 1.2 (refined):

Unreal Version 1.0 (original):

The Unity version:

The pack also features Hair Strand Designer that will help you deal with your designs:

You can learn more and get the pack for £12.50 here.