Many people promote hair oiling. I’ve had good experience in it help promote hair growth so there is that. However if your worried about shedding more than usual get that checked out to just make sure it isn’t any health condition. Other things that help promote growth/thickness is scalp massages, clarifying the hair, eating more nutrients dense food. All of that will promote a healthy set of hair
Biotin is a vitamin supports hair growth - derma rolling / scalp massage can increase blood flow - oiling can hydrate it and be included as part of the scalp massage - minoxidil will definitely increase growth and thickness but it is accompanied by a “dread shed” at the beginning of its use - I’ve also heard good things about glycolic acid and the ordinary hair growth serum