By Scott Blaine Hoffman, founder of Regenepure and Regrowth.com · 30+ years in the hair-loss field · Published November 2026
If you have spent any time on a hair-loss forum, you have seen men describe themselves as "a Norwood 2" or "a Norwood 4." The Norwood scale is the standard way doctors and transplant surgeons describe male pattern baldness. Knowing your stage helps you track change over time and have a clearer conversation with a doctor.
Where the scale comes from
The scale was first sketched by Dr. James Hamilton in the 1950s and refined by Dr. O'Tar Norwood, who classified the hair loss of 1,000 adult men and published the system in 1975 (Norwood, Southern Medical Journal, 1975). That is why you will also see it called the Hamilton-Norwood scale. His work also confirmed what men already suspected: pattern hair loss keeps progressing with age, even in later years.
The 7 Norwood stages
Norwood 1: No significant hair loss
A full adolescent hairline with no recession at the temples.
Norwood 2: The mature hairline
Slight, even recession at the temples, usually less than about an inch. Most adult men reach this stage, and on its own it is a normal maturing hairline, not balding.
Norwood 3: The first stage of balding
Deeper recession at both temples, creating a clear "M," "U" or "V" shape. This is where Norwood said balding is clinically meaningful. A variant, Norwood 3 Vertex, adds thinning at the crown while the front stays at stage 2 or 3.
Norwood 4: Front and crown both thinning
The hairline recedes further and the crown thins noticeably, but a band of hair still separates the two areas.
Norwood 5: The band thins
The same pattern, but bigger, and the band between front and crown becomes thin and narrow.
Norwood 6: The band is gone
The front and crown merge into one bald area across the top, with hair remaining at the sides and back.
Norwood 7: The classic horseshoe
Only a horseshoe-shaped band of hair remains around the sides and back of the head, and it may be thin too.
Norwood also described a less common Class A pattern, where the hairline recedes straight back from front to rear without a separate crown bald spot.
How to find your stage
- Take a straight-on photo of your hairline with your hair pulled back.
- Take a photo of the top and crown from above, in the same overhead light.
- Compare both photos to the descriptions above. Do not worry about landing exactly between two stages; the trend over time matters more.
- Repeat every three to six months.
If you are not sure which area is which, see Parts of the Scalp Explained.
What to do at each stage
This is general information, not a treatment plan. A doctor or dermatologist can confirm the diagnosis and talk you through options.
Norwood 2 to 3: the best time to act
Treatments for pattern hair loss work best at keeping hair you still have, so early action matters. Common first steps include topical minoxidil, such as the Regenepure Precision 5% Minoxidil Spray for Men, and a discussion with a doctor about DHT-reducing prescription medicines. Good scalp care supports the plan; many men add a ketoconazole shampoo like Regenepure DR.
Norwood 3 Vertex to 5: hold the line and fill in
The crown often responds better to minoxidil than the hairline does. A consistent routine for at least six months is needed to judge results. Some men at these stages also consider a hair transplant once loss is stable. If you are weighing surgery, read What You Should Know Before Getting Hair Transplants.
Norwood 6 to 7: realistic goals
Medical treatments are less likely to make a visible difference on scalp that has been bald for years. Options include transplant surgery if there is enough donor hair, scalp micropigmentation, hairpieces, or embracing a short or shaved look. Keeping the remaining hair and scalp healthy still matters.
What about women?
Women rarely follow the Norwood pattern. Female pattern hair loss usually spares the hairline and thins the top, widening the part. Doctors grade it with different scales, such as the Ludwig scale. See Female Pattern Hair Loss.
Frequently asked questions
Is Norwood 2 balding?
Usually not. A Norwood 2 is the mature hairline most men develop. Balding is generally considered to start at Norwood 3.
How fast do men move through the Norwood stages?
It varies widely. Some men stay at Norwood 2 or 3 for decades; others progress within a few years. Family history and age of onset give some clues.
Can you go back down the Norwood scale?
Treatment can regrow some hair, especially at the crown and in early stages, but the main goal is usually to stop or slow progression.
What is Norwood 3 vertex?
Temple recession at about stage 3 combined with thinning at the crown.
Sources
- Norwood OT. Male pattern baldness: classification and incidence. Southern Medical Journal, 1975.
Educational content only, not medical advice. See a doctor or dermatologist to confirm the cause of your hair loss before starting treatment.
