Dry ass scalp, dandruffing like a snow machine

I’m on my 7th week test 300ish a week I feel great and drink a lot of water but my head is like a skin producing factory, it’s snowing from my head like the alpines all the time what am I supposed to do. Ps I have tried showering with less heat and no shampoo but that didn’t work, and I have tried head and shoulders scalp conditioner and it got worse lol 😂