Male pattern baldness, also known as androgenetic alopecia, is the most common cause of hair loss in men, affecting roughly 50% of men by age 50. It is primarily driven by genetics and a hormone called dihydrotestosterone (DHT), which causes hair follicles to shrink (miniaturize) over time until they stop producing hair.

Here is a breakdown of the stages, treatments, and the latest medical updates as of late 2025.

1. Identifying the Stages (The Norwood Scale)

Hair loss usually follows a predictable pattern rather than happening all at once.

  • Stage 1-2: Minor recession at the temples, often called a “mature hairline.”

  • Stage 3-4: Deeper “M” or “U” shaped recession and the appearance of a thinning spot on the crown (the vertex).

  • Stage 5-7: The bridge between the front and back thins out, eventually leaving only a “horseshoe” of hair around the sides and back.

2. Gold Standard Treatments

Currently, there are two primary FDA-approved medications that remain the first line of defense:

  • Minoxidil (Rogaine): A topical liquid or foam that increases blood flow to the follicles. It is best for regrowth and thickening, but must be used indefinitely to keep results.

  • Finasteride (Propecia): A prescription pill that blocks the conversion of testosterone into DHT. It is highly effective at stopping further loss.

    • Note: Some men opt for Topical Finasteride to reduce the risk of systemic side effects like mood changes or sexual dysfunction.

3. New & Emerging Options (2025 Update)

The landscape of hair restoration is shifting toward “biologic” and targeted treatments:

  • Clascoterone (Breezula): Recent Phase 3 clinical trials (late 2025) show that this topical androgen receptor blocker is highly promising. Unlike oral drugs, it works locally on the scalp to block DHT without affecting hormone levels in the rest of the body.

  • Exosome & PRP Therapy: These “vampire” treatments involve injecting growth factors (from your own blood or lab-derived) into the scalp to “wake up” dormant follicles.

  • Low-Level Laser Therapy (LLLT): FDA-cleared caps or combs that use medical-grade lasers to stimulate cellular activity in the follicles.

4. Surgical & Cosmetic Solutions

If the hair follicle has completely died (the skin is smooth and shiny), medication cannot regrow hair. In these cases:

  • FUE Hair Transplant: Modern “Follicular Unit Extraction” involves moving individual follicles from the back of the head to the front. It is permanent and looks much more natural than the “plugs” of the past.

  • Scalp Micropigmentation (SMP): A medical-grade tattoo that mimics the look of a buzzed hair follicles, creating the illusion of a full, thick hairline.

Helpful Lifestyle Tips

  • Scalp Massage: 4 minutes of daily massage may increase hair thickness by stretching the follicle cells.

  • Nutrition: Ensure you aren’t deficient in Vitamin D, Iron, or Zinc, as these are critical for the hair growth cycle.

  • Ketoconazole Shampoo: Often sold as Nizoral, this antifungal shampoo has mild DHT-blocking properties and is a common “third pillar” in hair loss routines.

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