Hair Loss Treatments, Explained
This section explains individual hair loss treatments one at a time: how each one is thought to work, what the clinical evidence actually shows, how long it takes to judge, and the side effects worth knowing about. It covers prescription drugs, over-the-counter options, devices, in-office procedures and the popular home remedies that circulate online. Pages are organized by treatment rather than by brand; for specific product picks, see the Reviews section.
Good places to start: oral minoxidil and topical finasteride cover the two most-asked-about variations on the standard drugs; the minoxidil shedding and results timeline sets realistic expectations month by month; and laser therapy and rosemary oil look hard at two options whose marketing tends to run ahead of the evidence.
These guides are for understanding your options, not a substitute for a clinician. Each article cites its sources, and our methodology explains how we weigh different kinds of evidence, from randomized trials down to small open-label studies.
23 evidence-based articles
Do Scalp Serums Work for Hair Growth?
Do hair growth serums work? We review Kérastase Genesis, The Ordinary, divi and Vegamour: ingredients, the studies behind their claims, and the best pick.
GLP-1 Hair Loss: Does Ozempic, Wegovy or Mounjaro Cause It, and Does It Grow Back?
Does Ozempic cause hair loss? What the Wegovy and Zepbound trials show, why it mostly happens to women, how long it lasts and what actually helps it grow back.
Copper Peptides for Hair: What the Evidence Shows
Copper peptides for hair growth: GHK-Cu has lab and animal data but no placebo-controlled trial showing it regrows hair alone. Here is what the studies show.
Minoxidil Shedding and Results Timeline: What to Expect (2026)
Minoxidil shedding usually means it's working. When the dread shed stops, the month-by-month results timeline to month 12, and when to see a doctor.
Minoxidil Side Effects: What's Common, What's Rare, and What to Watch
Minoxidil side effects: most are mild and local (scalp irritation, dryness, the early shed). The honest list for topical and oral, and the rare red flags.
Rosemary Oil for Hair Loss: Does It Really Work Like Minoxidil?
Rosemary oil for hair loss: a 2015 trial found it matched 2% minoxidil over six months. Real but modest evidence that only rivals the weakest minoxidil dose.
Dermarolling for Hair Loss: Evidence, Protocol & Best Rollers (2026)
Dermarolling for hair loss: microneedling plus minoxidil beat minoxidil alone in a 2013 trial. The exact protocol (1.5 mm, weekly) and rollers that match.
Dutasteride for Hair Loss: Off-Label Guide (2026)
Dutasteride for hair loss blocks both types of 5-alpha reductase and may beat finasteride, but it's off-label for hair. What the evidence shows.
Ketoconazole Shampoo for Hair Loss: Does It Work? (2026)
Ketoconazole shampoo (Nizoral) for hair loss: mild anti-DHT effects and better hair density alongside minoxidil or finasteride. What the evidence shows.
Laser Therapy for Hair Loss: Does Low-Level Light Actually Work? (2026)
Evidence-based guide to LLLT and laser caps for hair regrowth. Clinical studies, FDA clearances, device comparison, and honest assessment.
Oral Minoxidil for Hair Loss: The Off-Label Trend Explained (2026)
Oral minoxidil for hair loss: low doses (2.5 to 5 mg) are prescribed off-label as an easier alternative to topical. What the evidence shows and what to watch.
PRP for Hair Loss: Is Platelet-Rich Plasma Worth the Cost? (2026)
PRP for hair loss: platelet-rich plasma injections can stimulate follicles, but protocols vary widely and sessions are costly. Is PRP worth the money?
Saw Palmetto for Hair Loss: Does It Work vs Finasteride? (2026)
Saw palmetto for hair loss: over two years, 38% of men improved on it vs 68% on finasteride. What that means, plus dosing, side effects and who it suits.
Spironolactone for Women's Hair Loss: What to Know (2026)
Spironolactone is an anti-androgen prescribed off-label for women with pattern hair loss. Here's how it works, what the evidence shows, and what to expect.
Topical Finasteride: Lower Side Effects, Same Results? (2026)
Topical finasteride blocks DHT at the scalp with much less absorption than the pill, which means fewer side effects. What the evidence shows on results.
Sudden Hair Shedding: What Telogen Effluvium Is and What Actually Helps
Telogen effluvium: sudden hair shedding after childbirth, illness, surgery or stress usually stops on its own, which is why almost every product seems to work.
Spermidine and Ceramides for Hair Loss: What the Trials Actually Show
Spermidine and ceramides for hair loss: two newer supplements with placebo-controlled human trials showing more growing-phase hair. What the trials found.
Do Vitamin Patches Work for Hair Loss?
Do vitamin patches work for hair loss? The chemistry argues against biotin patches, and the one clinical comparison found patch users more deficient.
Laser Therapy After a Hair Transplant: Is It Worth It? (2026)
Laser therapy after a hair transplant: what an LLLT cap can do (protect native hair, possibly aid healing), when to start, and what your surgeon must clear.
Does Laser Therapy Help Alopecia Areata? (The Honest Answer)
Does laser therapy help alopecia areata? LLLT is for pattern hair loss, not this autoimmune condition. Why it isn't an established treatment, and what works.
Laser Therapy for Women's Hair Loss: Does It Work? (2026)
Laser therapy for women's hair loss: LLLT caps and helmets are FDA-cleared for women, with strong evidence in women. What it can and can't do.
Minoxidil + Laser Cap: Does the Combination Work Better? (2026)
Minoxidil plus a laser cap: the strongest laser evidence comes from using both together. What the combination trials found, how to run it and who it's for.
Biotin for Hair Loss: Does It Actually Work?
Does biotin work for hair loss? Only if you're deficient, which is rare, and high doses can skew thyroid and heart lab tests. What the evidence shows.