Depends on your nutrition, heridity and other habits, consult me online for detailed information and prescription for  alopecia at younger age group, can be managed

You need proper evaluation for this problem; but if you want to first do at home then - apply flaxseed gel mixed with ginger juice and aleo Vera gel three times a week at bed time and wash hair in the morning ; take amla muraba and roasted black sesame and kalonji seeds empty stomach with warm water

Try with Narasimha rasayanam 1tsp bd. Neelibringadi thailam for head. Trichup cap 2bd.

Consult me online. Will guide u with proper diet. Need to know the exact cause at this young age for alopecia. Did your dad or anyone else in family had early baldness? Usually it is due to diet multivitamin deficiencies. Take albendazole 400mg one tablet at night after food. Start taking munayana keshadi vati 1 0 1 it has triphala with iron. Very good for hair growth Also apply dhurdhurapathradi taila mixed with ksheerabala taila. Or prashant hair oil mixed with ksheerabala taila. Do massage for hair roots and scalp. Eat fish ragi eggs sprouted vegetables, carrots beets. Calcium rich foods. Also take perfectil tablet for hair that is multivitamins 0 1 0 after food for one month. Also

You  consult dr and give full history