why hair breaks

What causes hair damage? Know your enemies!

Best are oil based cosmetics that:

contain only (or most of) natural vegetable oils,
are free of harmful substances, like alcohol, silicones, preservatives,
are free of mineral oils, that have unfavourable impact on hair,
combine the greatest amount of oils and vegetable extracts,
can be applied also on the scalp (guarantee of natural formula),
smells natural (for the given oil) and is free of fragrances,
have natural colour, not enhanced by the artificial colourants.

If product fulfils at least few of the aforementioned conditions, you can take it into consideration. Hair oil treatment can be performed only with these cosmetics, that do not contain irritation causing substances. Despite hair being dead on its length, the bulb requires natural strengthening and nourishment. You need to remember about that.