Hair loss and thinning are common concerns affecting millions worldwide, leading many to search for scientifically proven and non-invasive solutions. Laser hair growth devices are a popular choice for boosting hair growth. They use low-level laser therapy (LLLT) to improve hair density.

In this article, we’ll look at the benefits and safety concerns of using these devices, and best practices for optimal results.

What is a laser hair growth device?

A laser hair growth device is a handheld or wearable tool that promotes hair regrowth using LLLT. These devices emit a safe, low-intensity laser light that penetrates the scalp. By doing this, it improves the blood flow to the follicles. A stronger blood flow can deliver oxygen and nutrients better to the follicles, which supports the hair growth cycle.

All hair on the body grows in four cycles: growth, regression, rest, and shedding. When you lose hair as part of your natural process, such as androgenetic alopecia (pattern hair loss), the follicle’s growth phase shortens while the rest stage increases. The more this happens, the more chance for the follicles to shrink or become dormant. This prevents the follicle from growing new hair.

A laser hair growth device attempts to solve this by reactivating weak follicles and increasing their activity. The light energy stimulates the cells, which can help prolong the growth phase. Over time, this may lead to thicker, fuller hair with consistent use.

Learn about laser hair growth devices, their benefits, and how they can support your hair health by visiting Healthnews.

Step-by-step guide on how to use a laser hair growth device

Follow these steps for best practices on using a laser hair growth device:

1. Wash your hair to remove any oils or dirt that may block the laser penetration. Avoid using leave-in products.
2. Make sure your hair and scalp are completely dry. Using your device on wet hair could damage it.
3. Read the device’s instructions if this is your first time using it. Some have a setup process you can follow or settings you should be aware of.
4. Set the ideal settings for you. Some devices have adjustable intensity settings. Try starting with a default or lower setting and increasing slowly after you get used to it.
5. Place your device correctly. If you’re using a laser cap or a helmet, you’ll need to wear it on the correct side for full coverage. If you’re using a handheld device, avoid rushing and glide it slowly across your scalp.
6. Aim for the full duration as per the manufacturer’s instructions. Overusing may irritate your scalp and will not accelerate or improve your results.
7. Be consistent. Try and use it regularly, usually two to three times a week. This helps stimulate your hair follicles over time, which leads to better results.
8. It can be quite difficult to see if your hair growth is improving. Try taking photos of your scalp’s back, top, and frontal region every few weeks. This will help you understand if your pattern hair loss is slowing down and if your hair has more volume.
9. Keep your hair growth device away from children and pets to avoid damaging it. Clean it regularly with a dry cloth to reduce the chance of dirt particles blocking the lasers.

Common mistakes to avoid

Certain mistakes can reduce the effectiveness of a laser hair growth device or even damage it.

For example, overusing it can bring discomfort or irritation to your scalp or skin. With repeated overuse, you may see some redness that could become sensitive or sore to the touch.

On the other hand, skipping sessions means you’re not getting the maximum impact from your device. It slows down your progress, and depending on your hair cycle growth, it could result in uneven coverage. This also applies if you don’t position the device correctly, though this is more likely with handheld products rather than helmets.

If you use the device on wet hair, there’s no guarantee it will be as effective. The damp environment could block the laser from penetrating the hair follicles or add a risk of electric shock. It could also damage the device as most of the products on the market are not water resistant.

Finally, try to aim for realistic expectations. Hair growth devices, including laser and LED products, do work, but can take months to a full year to see any results. This is because of the long and variable hair cycles, and these products only work on hair in the growing stage. Any hair follicles that are in another stage have to go through the full cycle and come back in the growing stage for these devices to affect them.

Pros and cons of using a laser hair growth device

Pros of using a laser hair growth device include:

• Non-invasive. Unlike injections or surgery, which are more invasive and can bring on more side effects, LLLT is a lot safer. There’s no pain or recovery time, and it’s a proven way to stimulate hair growth.
• These are small, wearable or handheld devices made to use in the comfort of your home in your own time. You don’t need to set up appointments at a clinic or wait in long queues for outpatient treatments.
• Better scalp health. These devices improve blood circulation, which, over time, can lead to thicker hair and a healthier scalp.
• Several studies, including a 2021 review, found that clinical trials with various laser hair growth devices led to a statistical improvement in hair density and strength. This applies to both sexes. The improvements depend on what each study looked at and the device they used. Overall, the review mentions an increase in the number of hair follicles, hair count, hair growth, and density.
• Minimal side effects. If you use a device that’s been properly tested and use it correctly, it is highly unlikely you’ll experience any side effects.
• Cost-effective. These devices tend to be expensive, but you’re only purchasing it once. Visiting clinics for regular treatments may be much more expensive compared to the one-time cost of an LLLT device.

Despite the many pros, some cons of using a laser hair growth device include:

• Consistency and patience. Do not expect immediate results, as you’ll be disappointed. Because of the hair growth cycles, it can take several months to see any changes.
• High upfront cost. Some devices may be cheaper, but quality laser hair growth devices backed by blind or double-blind studies can cost anywhere from $1000–$2000. Still, it’s better to avoid purchasing a cheaper, untested device, as it might not work and feel like you put your money down the drain.
• Limited effectiveness. These devices typically don’t work on completely bald areas. This is because LLLT only works on active hair follicles.
• Time commitment. For the device to work properly, you need to use it consistently for the maximum duration. This usually means 10–20 minutes up to three times a week, which may be challenging if you have a busy schedule.
• Temporary effect. These devices work, but you must keep using them to sustain results. If you stop, your hair loss may resume.

The upside here is you could minimize the downsides with a bit of planning.

For example, if you wash your hair before you sleep, set a repeat reminder when you’re working on your computer or watching TV to use your LLLT device. This makes it easier to use it consistently, and because you’re already doing something during that time, you won’t see it as wasted time.

If you have large bald areas, you may want to speak with a dermatologist, plastic surgeon, or hair rejuvenation doctor to see where your investment should go, especially if you’re on a tight budget. They might suggest a permanent hair transplant surgery. Depending on where you live and the size of your bald areas, it could cost as much as a top-range LLLT device.

Finally, not everyone may be able to use LLLT devices.

If you have a scalp condition such as psoriasis or have open wounds or infections, you may be unable to use it without increasing risks for yourself or damaging it.

If you have photosensitivity disorders that make you uneasy with flashing lights, these devices can bring on more symptoms.

And if you’re pregnant or breastfeeding, speak with your doctor first. There’s little evidence to suggest that LLLT on your scalp can harm a fetus or breastfeeding baby, but your obstetrician may still advise against it. In general, pregnancy is a contraindication for laser therapy, so you should avoid using a laser hair growth device at least when you’re pregnant, to be safe.

Tips for maximizing results

It can take some time to see any results from laser hair growth devices.

Typically, you may notice less hair shedding in the first 3 months. However, this also depends on the seasons. Some people, regardless of LLLT use, report more hair shedding in Autumn than in the other seasons.

After 4–6 months, you may notice some early signs of regrowth. Hair feels thicker and healthier. You may start to see fewer or smaller areas without hair.

After 6 months to a year, you’ll likely see significant improvement in coverage and hair density. Hair looks and feels thicker, you’re shedding fewer hairs, and overall hair loss has slowed down.

To maximize results, maintain a healthy scalp, be consistent, and track your progress. Try to reduce stress and eat healthier meals, as better lifestyle choices may help slow down hair loss. A 2024 study found a link between pattern hair loss and higher omega-6 and small-particle LDL cholesterol levels. While the study has limitations, it indicates that common food ingredients like seed oils may inhibit hair growth.

You may also consider combining LLLT with FDA-approved treatments like minoxidil or finasteride. Studies show that laser hair device results are comparable to topical minoxidil. When combining both, participants saw a 126% improvement compared to using minoxidil or a laser hair growth device on its own.

If you want to take supplements, consider nutrients such as biotin, zinc, iron, and vitamin D. However, speak with your doctor if you’re unsure about the dose. Some vitamin deficiencies, including B12, have an association with hair loss. On the other hand, vitamin A, which is critical for vision, can worsen hair loss if you take too much of it.

Laser hair growth devices can be an effective way to slow down natural hair loss by helping hair to grow faster. They typically use a safe low-level laser to stimulate hair growth. They are backed by science, and as long as you use them correctly and consistently, you shouldn’t see any side effects. If in doubt, especially if you have any underlying medical conditions, speak with your doctor first before purchasing.

Do you use a laser hair growth device, or are you considering one? Share your thoughts or questions below. 

FAQs:

1. Can I use the device on wet hair?

Check your device’s instructions, as wet or damp hair could damage your device.

2. How often should I use a laser hair growth device?

It depends on your device, but typically, you’d use it for 10–20 minutes two or three times a week. 

3. Is a laser hair growth device suitable for all hair types?

Yes, a laser hair growth device should work regardless of your hair length, curliness, color, or whether it’s dry or oily. Wash your hair regularly, and don’t use your device with leave-in products for best results. A laser hair growth device is usually ineffective on entirely bald areas.