There is no single best treatment for alopecia because the right approach depends entirely on what type of hair loss you have. Pattern hair loss (the most common kind, affecting roughly half of men and women by middle age) responds to a completely different set of treatments than autoimmune hair loss or scarring alopecia. The good news: effective options exist for each type, and most people see meaningful results within six to twelve months of starting treatment.
Pattern Hair Loss: The Most Common Type
Androgenetic alopecia, or pattern hair loss, is driven by hormones and genetics. Hair gradually thins at the temples and crown in men, while women typically notice widening at the part line. Three treatments carry FDA approval for this condition: topical minoxidil, oral finasteride, and low-level light therapy. Most dermatologists recommend starting with one or two of these before considering procedures.
Expect a minimum of six months before you can tell whether a treatment is working. Hair growth is slow, and some people experience a temporary shedding phase in the first few weeks as weaker hairs make way for stronger ones. This is normal and not a sign the treatment is failing.
Topical Minoxidil
Minoxidil is an over-the-counter liquid or foam you apply directly to your scalp once or twice daily. It works by increasing blood flow to hair follicles within minutes of application, which helps push resting follicles back into an active growth phase. It comes in 2% and 5% concentrations. In clinical trials, the 5% solution produced 45% more hair regrowth than the 2% version over 48 weeks, so most people start with the stronger formula.
The biggest challenge with minoxidil is consistency. You need to use it every day, indefinitely. Stop, and any hair you regained will gradually fall out over the following months. A review of over 1,400 patients using oral minoxidil (a lower-dose pill form that some dermatologists prescribe off-label) found nearly 80% experienced no side effects. The most common issue was unwanted hair growth on the face or body, which affected about 15% of users.
Oral Finasteride
Finasteride is a prescription pill that blocks the hormone DHT, the primary driver of male pattern hair loss. It has been approved for this purpose since 1997. At the standard 1 mg daily dose, clinical trials show an average increase of about 16 extra hairs per square centimeter after 48 weeks compared to placebo. That may sound modest, but spread across the scalp, it translates to visibly thicker coverage.
Finasteride is only approved for men. A small percentage of users report sexual side effects like reduced libido, and these typically resolve after stopping the medication. Because it works by lowering DHT levels, finasteride is generally more effective at preventing further loss than regrowing hair in areas that have been bald for years. Pairing it with minoxidil gives you two different mechanisms working together, and many dermatologists recommend this combination as a first-line strategy.
Low-Level Light Therapy
FDA-cleared devices like laser caps and combs use red light to stimulate energy production in hair follicle cells. You use them at home, typically several times per week. The evidence supporting these devices is real but more limited than for minoxidil or finasteride. They work best as an add-on to other treatments rather than a standalone solution.
Treatments for Women
Women with pattern hair loss have fewer FDA-approved options since finasteride is not approved for female use. Minoxidil remains the first choice, and low-level light therapy applies equally to both sexes.
Beyond those, spironolactone is the most widely prescribed off-label medication for female pattern hair loss. It works by blocking the effects of androgens (male-type hormones) on hair follicles. Typical doses range from 100 to 200 mg daily. A meta-analysis found that about 57% of women saw improvement in hair loss with spironolactone, and that number climbed to nearly 66% when it was combined with another treatment like minoxidil. About 74% of women in one study reported either improvement or stabilization. It requires a prescription and regular monitoring since it affects potassium levels.
Alopecia Areata: Autoimmune Hair Loss
Alopecia areata is fundamentally different from pattern hair loss. Your immune system mistakenly attacks your hair follicles, causing round, smooth patches of baldness that can appear suddenly. In severe cases, it progresses to total scalp or body hair loss. Until recently, treatment options were limited and unreliable.
That changed in 2022 with the FDA approval of baricitinib, the first JAK inhibitor cleared for severe alopecia areata. JAK inhibitors work by calming the specific immune signaling pathways that drive the attack on hair follicles. In clinical trials, 35 to 40% of patients achieved at least 80% scalp hair coverage by 36 weeks, with results holding through more than two years of continued use.
A second JAK inhibitor, ritlecitinib, was approved in 2023 for patients aged 12 and older. Its results improve over time: 32% of patients reached 80% coverage by 24 weeks, rising to 45% at one year and 61% at two years. A third option, deuruxolitinib, has also received FDA approval. These medications are taken as daily pills and represent a genuine breakthrough for people with moderate to severe alopecia areata who previously had few reliable options.
For milder cases with just a few small patches, dermatologists often start with corticosteroid injections directly into the affected areas, which can restart hair growth without systemic medication.
Scarring Alopecia: Stopping Permanent Loss
Scarring (cicatricial) alopecia destroys hair follicles through inflammation and replaces them with scar tissue. Unlike other types, lost follicles cannot regrow hair. The treatment priority shifts from regrowth to stopping further damage as quickly as possible.
The standard approach relies on reducing scalp inflammation. In surveys of dermatologists, topical corticosteroids are the most common first-line therapy, used by over 90% of practitioners. Corticosteroid injections into the scalp follow closely. Topical minoxidil is also widely used alongside these, not because it treats the underlying inflammation, but because it can help preserve and strengthen remaining hair. For areas already scarred, hair transplantation may be an option once the disease has been inactive for a sustained period.
Platelet-Rich Plasma Therapy
PRP involves drawing your blood, concentrating the platelets, and injecting them into your scalp. The growth factors in platelets are thought to stimulate dormant follicles. In one comparative study, 70% of patients receiving PRP showed improvement in hair density over four monthly sessions. It is not FDA-approved as a hair loss treatment, and results vary significantly depending on the preparation method and injection technique. Costs run from several hundred to over a thousand dollars per session, with most protocols calling for three to four initial sessions followed by maintenance treatments every few months.
Nutritional Deficiencies Worth Checking
Nutrient deficiencies alone rarely cause significant hair loss in people eating a reasonably balanced diet, but they can worsen existing thinning or slow regrowth. Iron is the most clinically relevant: dermatologists often test ferritin levels in patients with hair loss and recommend supplementation to bring levels above 50 to 70 micrograms per liter, even without full-blown anemia. Adding the amino acid L-lysine to iron supplementation has been shown to boost ferritin levels in women whose iron stores didn’t respond to iron alone.
Zinc deficiency has been linked to hair shedding, and case studies show reversal of hair loss when levels are corrected through supplementation. Biotin deficiency causes hair loss but is extremely rare in adults eating a normal diet. Taking biotin supplements when you’re not deficient has no proven benefit for hair growth, despite heavy marketing. Vitamin E in the form of tocotrienols showed a significant increase in hair count in one small study at 100 mg daily, though larger trials are needed. The practical takeaway: a blood test checking iron, ferritin, zinc, and vitamin D is a reasonable step before or alongside starting any hair loss treatment, especially if your hair loss came on suddenly or doesn’t fit a typical pattern.