Vitamin D supplementation can aid hair regrowth for some, but results differ. Combining vitamin D with finasteride and minoxidil often improves hair thickness, though not for everyone.
The user experienced hair improvement using a topical finasteride, minoxidil, and tretinoin combo, along with supplements like zinc, copper, magnesium, vitamin D3, K2, iodine, and boron. They believe these changes are due to addressing mineral deficiencies and possibly thyroid issues, despite skepticism from others.
The conversation discusses the effectiveness of a "Hair growth complex" pill, with skepticism about its ingredients like saw palmetto and anagain. Users suggest saw palmetto may help slightly with DHT-related hair loss, but it's less effective than finasteride or dutasteride.
The user is struggling with hair loss despite using finasteride, minoxidil, and ketoconazole, and addressing vitamin D and ferritin deficiencies. They experienced a temporary improvement but are now shedding hair again and feeling stressed.