How To Use A Derma Roller: Does It Help In Hair Growth?

The idea of using a derma roller for hair growth might sound a little intimidating at first, but the buzz surrounding this skincare tool is hard to ignore. Though earlier it was known for its effectiveness in skincare, derma rollers are now gaining popularity in hair care for their potential to stimulate hair growth. But how does it work? And more importantly, does it help with hair growth?

Today, we'll explore what a derma roller is, how it works, the science behind its use for hair growth, and how to use it safely to achieve the best results.

What Is A Derma Roller?

A derma roller is a handheld tool fitted with a roller head covered in hundreds of tiny needles, typically ranging from 0.2 mm to 1.5 mm. While that might sound a bit scary, these micro-needles work on the principle of microneedling, a popular cosmetic treatment. When rolled over the skin (or in this case, the scalp), the needles create microscopic punctures, also called micro-injuries. These tiny injuries stimulate the body's natural healing response, increasing blood circulation and collagen production in the treated area.

How Can A Derma Roller Help In Hair Growth?

The idea behind using a derma roller on the scalp is that the same process of controlled injury used in microneedling for skincare can promote hair growth. The theory is that by creating micro-injuries in the scalp, the body's natural repair system is triggered, which can lead to better circulation and, ultimately, better nourishment for hair follicles.

Here's How It's Said To Work

1. The microneedling process increases blood flow to the scalp, providing hair follicles with essential nutrients and oxygen. Improved circulation is key for healthy hair growth, as it nourishes the follicles and promotes the growth of stronger, thicker hair.
    
2. Studies suggest that microneedling may activate dormant hair follicle stem cells, which can help rejuvenate thinning hair or stimulate new hair growth. 
    
3. When used alongside hair growth serums or treatments such as minoxidil (commonly known as Rogaine), the microchannels created by the derma roller allow these products to penetrate deeper into the scalp. This enhanced absorption can potentially lead to more effective results.

Scientific Evidence: Does It Really Work?

While the use of a derma roller for hair growth is a relatively new concept, there is some promising research supporting its efficacy. A 2013 study published in the International Journal of Trichology explored the effects of microneedling combined with minoxidil versus minoxidil alone. The group that used microneedling in addition to minoxidil experienced a significantly greater increase in hair growth compared to those who used minoxidil alone.*

Another study from the Journal of Cutaneous and Aesthetic Surgery found that Platelet-Rich Plasma (PRP) with microneedling as an efficacious treatment for AGA and augments the effects of conventional treatment.**

However, it's worth noting that while the research is encouraging, more large-scale studies are needed to fully understand the long-term benefits and effectiveness of derma rollers for hair growth.

How To Use A Derma Roller For Hair Growth

Using a derma roller on the scalp isn't complicated, but it does require proper technique to avoid injury or infection. Here's a step-by-step guide:

1. Choose The Right Derma Roller

For beginners, it's advisable to start with a derma roller that has needles measuring between 0.25 mm and 0.5 mm. Larger needles (above 1.0 mm) are more effective for hair growth but should only be used by professionals or those experienced with microneedling. Using a needle that's too long can cause unnecessary damage to the scalp and lead to infections or scarring.

2. Prepare Your Scalp

Before you start, make sure your scalp and the derma roller are clean. Wash your hair with a gentle shampoo and let it dry thoroughly. Disinfect the roller by soaking it in rubbing alcohol for 5-10 minutes.

3. Roll Gently

Start by dividing your hair into sections to ensure you cover the entire scalp. Begin rolling in one direction (for example, front to back) over each section. Apply gentle pressure, making sure the needles penetrate the scalp without causing pain or discomfort. Roll the derma roller 6-8 times in each section, and then change directions (left to right) to stimulate the scalp from different angles.

4. Apply Hair Growth Serum (Optional)

After you've finished rolling, you can apply a hair growth serum like minoxidil or any other treatment recommended by your dermatologist. Since the microchannels created by the needles help with absorption, this step can enhance the effectiveness of topical products.

5. Disinfect And Clean The Roller

After use, it's crucial to clean the derma roller again with rubbing alcohol and let it air dry before storing it. This step ensures that bacteria don't accumulate on the roller, which could cause infections during the next use.

6. Post-Treatment Care

Avoid applying any harsh chemicals or heat to your scalp for at least 24 hours post-treatment. Your scalp may feel slightly tender, but this should subside quickly. If you experience excessive redness, irritation, or pain, consult a dermatologist.

How Often Should You Use A Derma Roller For Hair Growth?

How often you should use the derma roller depends on the needle size. For a 0.25 mm roller, you can use it 2-3 times a week. However, if you're using a 0.5 mm or 0.75 mm roller, limit the usage to once a week to allow your scalp sufficient time to heal. Rollers with needles longer than 1.0 mm should only be used once every two weeks or less, and always under professional supervision.

Precautions To Keep In Mind

While derma rolling is generally safe when done correctly, there are a few precautions you should be aware of:

1. Overusing the roller can damage your scalp, leading to irritation or infection. Stick to the recommended frequency based on your needle size.
2. Always disinfect your roller before and after each use to prevent bacterial contamination.
3. Don't use a derma roller on areas of the scalp with active infections, cuts, or rashes.
4. If you have a sensitive scalp, a skin condition like psoriasis, or if you're unsure about using a derma roller, consult a dermatologist first.

Is It Worth Trying?

While the science behind using derma rollers for hair growth is still evolving, early research and anecdotal evidence suggest that it can be a helpful tool, especially when combined with other treatments. As with any skincare or hair care tool, results will vary from person to person, and consistency is key. For those struggling with hair thinning or early stages of hair loss, a derma roller might just be the extra push needed to stimulate growth.

However, it's always best to approach this treatment cautiously, ensuring proper technique and hygiene to avoid any unwanted side effects. And if you're unsure, a chat with your dermatologist can help determine whether derma rolling is right for you.

*A Randomized Evaluator Blinded Study Of Effect Of Microneedling In Androgenetic Alopecia: A Pilot Study [Read Here]

** Platelet-Rich Plasma With Microneedling In Androgenetic Alopecia: Study Of Efficacy Of The Treatment And The Number Of Sessions Required [Read Here]

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