There is no miracle cure that is going to help your hair grow faster. If you want long hair it takes time and patience's. Something's that you can do are
Clarify shampoo Get a good Clarifying shampoo and use this once a month. It will cut any debris and dirt from the products you use in your hair.
Shampoo and condition your hair on regular basis . A healthy clean scalp promotes hair growth. Stop listening to these people who tell you to wash your hair every two weeks to once a month. This is disgusting and can cause buildup and bacteria and fungus on the scalp . Your 4c hair sweats gets oily and dirty . If you dont wash your hair this will eventually lead to your hair breaking off and falling out .

Deep Condition a good deep condition once a week or month depending on your hairs needs It balances the hair and puts nutrients back in the hair and strengthens it .
Get a good leave in conditioner to use daily for your hair one that suites your hair needs and type
Diet play a role in the health of your hair. What and how are you eating? Are you getting and drinking enough water daily ? Eat omega rich foods 3 and 6 also lentils beans rice whole grain breads and cereals meat fish if you eat this protein make sure you are getting enough of this daily .
Stop wearing tight styles . If you are doing this braids and weave stop It causes hair loss and if you do wear this or choose too then make sure the braids are not pulled to tight.
Scalp massages are another good thing. You can do a scalp massage daily for 10–15 mins daily this will circulate the blood and promote hair growth
Stop heat if you are using heat then you need to stop or if you prefer it then limit it to once a week
Trim ends Stop trying to hold on to raggedy ends . Make sure you trim your hair when needed .
Also if you use combs make sure its a wide tooth comb especially if its for 4c afro type hair . Be gentle when combing starting from the bottom of your hair and work your way up to the roots .
Moisturize Moisturize Moisturize . Water is your friend especially for 4c hair . Do not be afraid to use it .
Clarify shampoo Get a good Clarifying shampoo and use this once a month. It will cut any debris and dirt from the products you use in your hair.
Shampoo and condition your hair on regular basis . A healthy clean scalp promotes hair growth. Stop listening to these people who tell you to wash your hair every two weeks to once a month. This is disgusting and can cause buildup and bacteria and fungus on the scalp . Your 4c hair sweats gets oily and dirty . If you dont wash your hair this will eventually lead to your hair breaking off and falling out .

Deep Condition a good deep condition once a week or month depending on your hairs needs It balances the hair and puts nutrients back in the hair and strengthens it .
Get a good leave in conditioner to use daily for your hair one that suites your hair needs and type
Diet play a role in the health of your hair. What and how are you eating? Are you getting and drinking enough water daily ? Eat omega rich foods 3 and 6 also lentils beans rice whole grain breads and cereals meat fish if you eat this protein make sure you are getting enough of this daily .
Stop wearing tight styles . If you are doing this braids and weave stop It causes hair loss and if you do wear this or choose too then make sure the braids are not pulled to tight.
Scalp massages are another good thing. You can do a scalp massage daily for 10–15 mins daily this will circulate the blood and promote hair growth
Stop heat if you are using heat then you need to stop or if you prefer it then limit it to once a week
Trim ends Stop trying to hold on to raggedy ends . Make sure you trim your hair when needed .
Also if you use combs make sure its a wide tooth comb especially if its for 4c afro type hair . Be gentle when combing starting from the bottom of your hair and work your way up to the roots .
Moisturize Moisturize Moisturize . Water is your friend especially for 4c hair . Do not be afraid to use it .