Hello;
Thanks for your query.
The commonest cause of breaking of hair are:-
1-Excessive dryness of hairs due to heat styling,ironing or curling with heat,
2-Dryness due to lack of conditioning,
3-Pulling of your tangled hairs while combing can cause breakage,
4-Brittle hair occurs when the structural integrity of the hair is weakened by medical illness like anaemia,hypothyroid, nutritional deficiency like vitamin-D,zinc.
5-Breakage in the crown area can occur due to:-
a-styling techniques such as tight ponytails,
b-using elastics with metal piece,
c-using wrong type of hair accessories which can catch and break your hair off.
d-Hair color can also cause breakage.
As a home care you can do these things to prevent breakage:-
1-Daily conditioning with moisturizing treatments like you are using,
2-Usea comb with wide teeth so as to easily work through your hair,
3-Use ponytail holders with no metal parts or covered elastics,
4-Try different styles that don't pull your hairs too tight,
5-Hot oil treatment that is a application of warm oil (a mix of canola oil and olive oil in equal proportion) also helps.
Another important thing you need to do is consult a Dermatologist and get investigated for any underlying medical condition and get treated.
The best treatment for the breakage will be advised by the Dermatologist as per the underlying cause.
Hope this answer is helpful to you.
Please accept this answer in case you have no further queries.
Take care.
Warm regards

---