Argon oil in general is brilliant for your hair, think of it as a deep conditioner. Really puts some moisture back into it.
Whilst the best way to deal with any split ends is to, unfortunately, cut them off, argon oil is definitely not a bad next-best option. Especially being organic, so you aren't getting any of those nasty sulphates or parabanes which strip your hair of its natural oils.
Hope this helps :)