The Norwood scale is the chart almost every hair loss doctor, transplant surgeon and forum user reaches for when describing male pattern baldness. In my 30-plus years in this field, it has been the common language between patients and surgeons: say "I'm a Norwood 3" and everyone in the room knows roughly what your hairline looks like. But knowing your number is only useful if you know what it means for your options. Here is a plain guide to the seven stages, how to place yourself on the scale, and what each stage usually means for treatment.
What Is the Norwood Scale?
The scale started with anatomist James Hamilton, who studied more than 300 men and published a set of baldness types in 1951 (Hamilton, Annals of the New York Academy of Sciences, 1951). In 1975, Dr. O'Tar Norwood, a dermatologist and hair transplant surgeon, refined it after examining 1,000 men (Norwood, Southern Medical Journal, 1975). His version, often called the Hamilton-Norwood scale, is still described as the most widely used classification for hair loss in men (Gupta and Mysore, Journal of Cutaneous and Aesthetic Surgery, 2016).
Norwood's key observation was that male pattern hair loss tends to follow a predictable path: it starts at the temples and the crown, then gradually spreads across the top of the scalp until the two areas meet.
The 7 Norwood Stages, Explained
Norwood 1
Little or no recession of the hairline. This is the baseline adult hairline.
Norwood 2
A small, usually symmetrical triangle of recession at the temples. Many men reach this point in their late teens or twenties as the juvenile hairline matures, and it does not always mean progressive hair loss.
Norwood 3
Norwood considered this the first stage of true baldness: deep recession at the temples that is bare or only sparsely covered. A common variant, Norwood 3 vertex, describes men whose hair loss is mainly at the crown while the front stays at or above a stage 3 pattern.
Norwood 4
The temples recede further, and the crown becomes sparse or bare. A band of moderately dense hair still separates the front from the crown.
Norwood 5
The front and crown are still separated, but the bridge of hair between them is narrower and thinner.
Norwood 6
The bridge is gone. The frontal and crown areas have joined into one larger area of thinning or baldness.
Norwood 7
The most advanced stage. Only a horseshoe-shaped band of hair remains on the sides and back of the head, and that hair is often finer than it once was.
The "Type A" variant
Some men do not follow the usual temples-and-crown pattern. In the Type A variant, the whole front hairline moves straight back without leaving an island of hair in the middle, and there is no separate bald spot at the crown at the same time (Gupta and Mysore, 2016). From a surgeon's point of view this matters, because the plan for a Type A patient looks quite different from the plan for a classic stage 4 or 5.
How to Find Your Norwood Stage
- Use good light and two mirrors. Overhead bathroom light exaggerates thinning, so use even daylight if you can.
- Photograph the front, both temples, the top and the crown. Keep your hair dry and pulled straight back for the front shots.
- Compare against the stage descriptions, not just one picture. Most men sit between two stages, and that is normal.
- Repeat every six months with the same lighting. The trend over time tells you more than any single photo.
Keep in mind that the scale is a rough guide. Studies have found that different examiners do not always agree on a man's exact stage (Guarrera et al., International Journal of Trichology, 2009). That is one reason newer systems such as the BASP classification exist, and one reason an in-person exam with a dermatologist or hair restoration physician is worth more than a self-assessment.
What Each Stage Usually Means for Treatment
This is where the number earns its keep. Speaking broadly, from three decades of watching patients go through this:
- Norwood 2 to 3: This is the stage where medical treatment has the most to work with, because there are still plenty of living follicles. The American Academy of Dermatology notes that treatment tends to work best when started early (AAD). Topical minoxidil is the OTC option; prescription options like finasteride are a conversation to have with a doctor.
- Norwood 3 vertex to 4: Topical minoxidil's OTC labeling is for regrowing hair on the top of the scalp (vertex), so crown-predominant men are squarely in its labeled lane. This is also when many men first ask about a transplant. My advice: get medical treatment going first, so you know what hair you are likely to keep.
- Norwood 5 to 6: Medical treatment is still useful for holding on to what remains, but a transplant becomes the main way to restore coverage at the front. Planning matters enormously, because your donor supply is limited. I wrote about that in Your Donor Hair Is Finite.
- Norwood 7: Expectations need to be realistic. A good surgeon may frame the face with a conservative hairline, but there may not be enough donor hair to cover everything. Some men choose scalp micropigmentation, a hairpiece or a confident shave instead, and those are all reasonable choices.
The Mistake I See Most Often
The biggest mistake is a young man at Norwood 2 or 3 who wants his teenage hairline back with surgery, before anyone knows how far his hair loss will go. Transplanted hair placed low on the forehead at 24 can look stranded at 40 if the hair behind it keeps thinning. A good surgeon will tell you to stabilize first, design for the future and keep enough donor hair in reserve. If a clinic promises otherwise, keep looking. Our guide on regrowing your hairline walks through what can and cannot realistically come back.
When to See a Doctor
See a dermatologist or hair restoration physician if your hair loss is sudden, patchy, comes with itching, pain or redness, or doesn't match the usual Norwood pattern. Those can point to other conditions such as alopecia areata, scalp inflammation or scarring hair loss, which need a diagnosis rather than a stage number. It's also worth a visit if you're in your twenties and moving through the stages quickly, since that is exactly when early treatment matters most (see Hair Loss in Your 20s).
Norwood Scale FAQ
What Norwood stage is considered bald?
Norwood defined stage 3 as the minimum level of true baldness. Stages 1 and 2 are generally considered normal or early recession.
Can you go back down the Norwood scale?
Medical treatment can sometimes improve density, especially at the crown, but it rarely moves a hairline back by whole stages. A hair transplant can change how the front looks, but it doesn't stop the underlying hair loss.
How fast do men move through the Norwood stages?
It varies widely. Some men stay at Norwood 2 or 3 for decades; others move from 2 to 5 within ten years. Family history and age at onset are the best rough predictors, and photos taken every six months will tell you your own pace.
Is there a Norwood scale for women?
Women's pattern hair loss usually looks different, with widening of the part and diffuse thinning while the front hairline stays in place. Doctors typically use the Ludwig or Savin scales for women.
Where to Go From Here
If you're at Norwood 2, 3 or 3 vertex, a steady daily routine is the most practical step you can take today. Our Hair Regrowth Kit pairs Regenepure Precision 5% Minoxidil Spray with the DR and NT shampoos and Biotin Conditioner for a simple daily scalp routine, and you can read more about the DR shampoo and minoxidil combination. If you're further along, start with a consultation with an experienced, board-certified hair restoration surgeon, and bring your photos.
This article is for general educational purposes and is not medical advice. Talk with a doctor or dermatologist about diagnosis and treatment.