Which Derma Roller Needle Size is Best for Hair Regrowth? Comparing Effectiveness of Common Tool Sizes

WrittenbyLuat Duong
Last updated

Are you experiencing hair loss and looking for an effective solution to promote hair regrowth? Derma rolling, also known as microneedling, is a popular technique that can stimulate hair growth. But with various derma roller sizes available in the market, you might wonder which one is best for hair regrowth. In this article, we will explore the different derma roller sizes and guide you in choosing the most suitable size to achieve optimal results.

Which derma roller size is best for hair regrowth?

The best derma roller size for hair regrowth depends on the target area and the severity of hair loss. Different derma roller sizes have varying needle lengths, which determine the depth of penetration into the scalp. Let's examine the commonly available sizes and their recommended uses:

1. 0.2mm to 0.25mm:

Derma rollers in this size range have short needles and are primarily used for enhancing the absorption of topical hair products, such as serums and oils. They create tiny microchannels on the scalp, allowing better penetration of active ingredients. However, these sizes are not suitable for significant hair regrowth.

2. 0.5mm to 1.0mm:

Derma rollers in this range are considered ideal for hair regrowth. The needle lengths penetrate the scalp deeper, reaching the hair follicles. They stimulate blood flow, promote collagen production, and activate the hair follicles, leading to improved hair growth. These sizes are especially effective for individuals with mild to moderate hair loss.

3. 1.5mm to 2.0mm:

Derma rollers with these needle lengths are typically recommended for other purposes, such as reducing the appearance of scars and wrinkles. They are less commonly used for hair regrowth because the longer needles may cause discomfort and potentially damage the scalp if not used properly. It is generally advisable to consult a dermatologist or trichologist before using derma rollers in this size range for hair regrowth.

4. Above 2.0mm:

Derma rollers with needle lengths above 2.0mm are not recommended for hair regrowth. These sizes are primarily used for professional treatments and should only be performed by trained practitioners. Using longer needles without professional supervision can lead to skin irritation, pain, and potential complications.

It's important to note that individual responses to derma rolling may vary, and what works for one person may not yield the same results for another. Additionally, it is crucial to maintain proper hygiene and follow the manufacturer's instructions when using a derma roller to minimize the risk of infection.

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Tips for using a derma roller for hair regrowth:

Here are a few tips to ensure you get the most out of your derma rolling sessions for hair regrowth:

1. Choose a high-quality derma roller:

Invest in a derma roller made from high-grade materials. Look for stainless steel or titanium needles that are less likely to cause skin irritation or breakage during the rolling process.

2. Cleanse your scalp:

Before using a derma roller, make sure your scalp is clean and free from any product residue or dirt. This helps reduce the risk of infection and ensures optimal results.

3. Apply gentle pressure:

When using a derma roller, apply gentle pressure to avoid causing excessive discomfort or damage to the scalp. The goal is to stimulate the hair follicles, not to puncture the skin deeply.

4. Roll in different directions:

To ensure even coverage, roll the derma roller in different directions (horizontal, vertical, and diagonal) over the target area. This helps create microchannels throughout the scalp and stimulates hair growth from multiple angles.

5. Follow a consistent schedule:

Consistency is key when using a derma roller for hair regrowth. Develop a routine that suits your schedule and stick to it. Most professionals recommend using a derma roller once a week or every two weeks, depending on the needle length and your skin's tolerance.

6. Combine with hair growth products:

Enhance the effectiveness of derma rolling by using hair growth products, such as minoxidil or other topical solutions, as recommended by your dermatologist or trichologist. The microchannels created by the derma roller allow better absorption of these products, maximizing their benefits.

Remember that patience is crucial when it comes to hair regrowth. It takes time for the hair follicles to reactivate and produce visibleresults. It is recommended to use a derma roller consistently for several months before expecting significant improvements in hair growth.


Choosing the right derma roller size for hair regrowth is essential for achieving optimal results. For most individuals with mild to moderate hair loss, derma rollers with needle lengths ranging from 0.5mm to 1.0mm are recommended. These sizes effectively stimulate blood flow, promote collagen production, and activate the hair follicles. However, it is always advisable to consult a dermatologist or trichologist before starting any derma rolling treatment.

When using a derma roller, remember to prioritize safety and hygiene. Invest in a high-quality derma roller, cleanse your scalp before each session, apply gentle pressure, and roll in different directions to ensure even coverage. Follow a consistent schedule and consider combining derma rolling with hair growth products for enhanced results.

With patience, dedication, and the right derma roller size, you can potentially promote hair regrowth and regain confidence in your appearance.

Disclaimer: This article is for informational purposes only and should not be considered as medical advice. Always consult with a qualified healthcare professional or dermatologist for personalized guidance regarding your specific hair loss concerns.

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Luat Duong

Luat Duong is a Copenhagen-based writer and content strategist specializing in hair loss and health. His work has been featured in MyHealthGuide, The Right Hairstyles, and Woman's Era. He is a graduate of Vaasa University. You can connect with him on LinkedIn.