Norwood Scale: The 7 Stages of Male Pattern Hair Loss and Ways to Treat Hair Loss

The Norwood scale (also called the Hamilton-Norwood scale) is the main system used to rate how much male pattern baldness you have. Most men lose hair in a few typical patterns over many years. The Norwood scale includes easy reference images that show where you fall on the balding spectrum.

Doctors, researchers, and hair transplant surgeons also use other grading systems. Some of those scales include both sexes, or they’re designed around female pattern baldness.

Even so, the Norwood scale is the tool clinicians use most often when they talk about male pattern baldness. It gives you a shared reference to judge how advanced the loss is, review treatment choices, and track how well a plan is working.

Key Takeaways

• The Norwood scale classifies male pattern baldness from no loss to advanced scalp thinning. 
• Higher Norwood stages reflect greater hairline recession and crown thinning over time. 
• Male pattern baldness is linked to DHT, genetics, age, and individual hair characteristics. 
• Early stages may respond better to treatment, while advanced stages show limited regrowth potential. 

What is the Norwood Scale?

The Norwood Scale (or Hamilton-Norwood Scale) is a way to measure and group the stages of male-pattern baldness. Dr. James Hamilton developed it in the 1950s, and Dr. O’Tar T. Norwood refined it about 20 years later. That updated version is still the most commonly used system for male hair loss today.

This scale tracks how hair loss progresses over time. In general, higher numbers mean more hair loss. A 1 is no obvious loss, while a 7 points to near total loss, with a horseshoe band of hair mainly remaining along the sides of the head.

Male pattern baldness is linked to higher levels of DHT (dihydrotestosterone), a male sex hormone connected to testosterone. Other factors can also play a role in hair loss. Your age, ethnicity, genes, and hair color affect how much hair you may lose and whether you might be a good candidate for a hair transplant.

What Are the 7 Stages of Hair Loss? And Norwood Class A

The Norwood hair scale sorts male pattern hair loss into seven stages based on how severe it looks, the pattern it follows, and how it tends to progress.

Below is an overview of each of the seven stages of hair loss, using the Norwood scale.

Norwood Class 1

Class 1 on the Norwood Scale describes a typical head of hair with no visible thinning. It’s viewed as a normal, age-appropriate hairline and the usual maturation that often happens from adolescence into adulthood. Because of that, Norwood Class 1 isn’t considered balding.

You can stay at Norwood 1 and not move forward, although that’s not common. If you want to tell normal aging apart from early male pattern balding, your best bet is to talk with a professional.

Norwood Class 2

Class 2 on the Norwood Scale often shows the start of a receding hairline, along with a more triangular “widow’s peak” at the forehead. Under the Norwood Scale, Class 2 still isn’t labeled as balding.

This early stage can feel stressful for some people, and more loss can still happen later. Still, Class 2 hair loss is very treatable, which is why this stage is often a smart time to act.

Natural ingredients like rosemary may limit DHT (the hormone responsible for hair loss) from attaching to your follicles. This oil is widely viewed as effective for slowing hair loss and helping you hold on to the hair you have.

Norwood Class 3

At Norwood 3, there’s usually a clearer drop in hair above the temples and along the forehead, and the hairline may start to look like an M, U, or V. Some people also notice thinning at the crown at this stage, called a Class 3 vertex.

With Class 3, and any stage after it, the Norwood Scale considers the pattern to be balding.

Norwood Class 4

Norwood Stage 4 is considered balding, and hair loss often becomes easier to spot at the crown. You may also have deeper recession at the temples and the front anterior areas. A band of hair usually separates the crown (vertex) from the top of the head (mid-scalp).

Norwood Class 5

Norwood Stage 5 hair loss is typically quite noticeable, with more thinning across the frontal area and the crown. The “bridge” between the crown (vertex) and the top of your head (mid-scalp) starts to narrow and break up, so the bald areas begin to blend together.

Norwood Class 6

At Norwood stage 6, the strip of hair between the crown and the receding hairline begins to fade away. Hair loss is usually significant across the front and top of the scalp. If the crown hasn’t thinned much, the hairline may now pull back close to the back of the head.

Norwood Class 7

Norwood 7 is the most advanced level of balding on this scale. At this stage, very little scalp hair remains, aside from a few stray hairs or small patches where growth is still relatively mild.

By this point, you’ll mostly see the classic horseshoe band around the back and sides of the head. The remaining hair can look finer and less dense.

Norwood Class A

Beyond the seven common stages, there’s a less common pattern called Norwood Class A. In this variation, the hairline recedes evenly and symmetrically, without leaving a small tuft in the center, and there’s no bald spot at the crown. Instead, the hairline shifts straight back from the front toward the back.

How Is Male Pattern Baldness Diagnosed?

A clinician can diagnose hair loss with a physical exam and by reviewing your medical history. A lot of cases get labeled as male pattern baldness, but if you’re young, female, or noticing an unusual pattern, your doctor may want to rule out other causes first.

A dermatologist or hair loss specialist can check your scalp to map the pattern and amount of loss. They may also gently pull a few hairs and take a closer look at your hair follicles.

How To Naturally Treat Hair Loss

Hair loss can also relate to scalp dryness, product buildup, and breakage, which is why many natural options focus on conditioning the scalp and helping your strands look and feel healthier.

Here are natural, science-backed choices that are generally low risk and can support a better scalp environment over time.

1. Batana Oil

Batana oil is a rich, nourishing oil that can moisturize your scalp and support healthier-looking hair from roots through ends. It can be a good fit when your scalp feels dry or your hair snaps easily, since added moisture and slip may make hair feel softer, smoother, and easier to detangle.

Warm a small amount between your palms, then massage it into your scalp for a few minutes. For me, 30 minutes is plenty before shampooing and my scalp feels less tight. You can also smooth it through the lengths as a pre-shampoo step, leave it on for 30 to 60 minutes, then wash and condition as you normally would.

2. Rosemary oil

Current evidence suggests one study has found rosemary oil may be similarly effective to the over-the-counter hair-growth medication minoxidil – often sold as Rogaine – for supporting hair growth.

This oil comes from the rosemary plant, and you can apply it directly to your scalp and massage it in.

3. Coconut oil

In the papers I saw, coconut oil may help prevent hair loss.

It tends to be more of a protective step than something that regrows hair. Coconut oil – available as a liquid or a solid – is generally low risk and is a popular choice for many routines.

Data showing dramatic hair growth or thickening from coconut oil is very limited. It helps to weigh risk versus benefit: the risk is very low. You may not see a big payoff, but it’s also unlikely to cause harm.

4. Red ginseng

One review notes red ginseng is widely used and has also been shown in studies to improve hair growth in mice.

Some findings suggest thicker-looking hair and a shift of the follicle from a resting phase into a more active phase. Overall, it’s fairly low risk and may offer some benefit.

5. Peppermint oil

Animal studies indicate peppermint oil has been shown to stimulate hair growth by helping increase blood flow to the scalp.

Peppermint oil acts as a vasodilator, meaning it helps widen blood vessels. When a blood vessel widens, blood flow can increase. Menthol, eucalyptus, and peppermint can do this.

You’ll want to dilute this oil with a carrier oil before you apply it, then massage it into your scalp.

6. Onion juice

Researchers observed onion juice has also been shown to promote hair growth in people.

It’s often described as working because of its sulfur content, which is thought to help strengthen hair, calm inflammation, and support scalp hydration.

You can rub onion juice straight onto your scalp without mixing it with anything else.

Protect Your Hair With Low-Risk, Proven Treatments

Know your stage before you overhaul your routine. If you’re at Norwood Class 1 or 2, staying consistent matters more than stressing out. When your temples start creeping back, stick to low-risk scalp habits that support the follicles you still have.

Try massaging your scalp for 3 to 5 minutes, cleansing often enough to avoid buildup, and reaching for nourishing oils when dryness makes hair feel rough or fragile.

If you already notice crown thinning or a clear M-shape, take monthly photos in the same lighting so you can see what’s changing and what isn’t. For practical routines and natural options that fit each stage, use Keyoma hair care tips.