Evidence-based guides on hair loss treatments, causes, and care.
Low-level laser therapy, often called LLLT or photobiomodulation, is an FDA-cleared treatment for hair loss that operates on a completely different mechanism than any drug. It u...
Melatonin is widely known as a sleep hormone, the compound produced by the pineal gland that regulates circadian rhythms. What is less widely known is that melatonin also has di...
Minoxidil and finasteride are two of the best-studied medication treatments for male pattern hair loss. One common question is whether they can be used together. The answer is y...
Sleep affects nearly every system in the body, and hair follicles are no exception. The question of whether poor sleep causes hair loss has an increasingly well-supported answer...
Hair loss is often framed as a hormonal problem — too much DHT, not enough growth stimulation. This framing is accurate but incomplete. Scalp inflammation is an important, often...
Spironolactone was first developed as a medication for blood pressure and heart failure. It also has anti-androgenic properties that make it effective for treating conditions dr...
Cetirizine is an antihistamine. Most people know it as the active ingredient in over-the-counter allergy medications like Zyrtec. Its relevance to hair loss is less widely known...
Search volume for natural hair loss ingredients like saw palmetto, pumpkin seed oil, rosemary oil, and caffeine runs into the millions every month. The appeal is understandable...
Biotin is the most widely marketed nutrient for hair health. The marketing is strong, but the evidence is much weaker. This article explains what biotin does, who may actually n...
Creatine is one of the most widely used sports supplements in the world, and concern about its relationship to hair loss surfaces regularly in gyms, online forums, and clinical...
Iron deficiency is the most common nutritional deficiency worldwide, affecting an estimated 1.2 billion people. It is also one of the most often identified nutritional contribut...
Androgenetic alopecia is driven by genetics and DHT. But, genetics and DHT do not operate in isolation. The follicle environment also determines how aggressively a pattern expre...