What size needle is best for hair growth?

Author: Jensen Bins III  |  Last update: Sunday, October 5, 2025

A size of 0.5mm can enhance the absorption of topical treatments if you are doing some regular hair growth serum treatment. In comparison, 1.0mm to 1.5mm can be used if you intend to stimulate more deep scalp layers, promoting hair growth with the microneedling treatment.

What size needle is best for hair regrowth?

An older study found that a dermaroller with 1.5 mm needles effectively promoted hair growth in combination with triamcinolone acetonide . However, most dermarollers available online have 0.25-0.5 mm needles. A person should contact a dermatologist to find the best needle length for their requirements.

What size microneedle for hair growth?

We found that the optimal length and cycle of microneedle treatment on hair growth was 0.25 mm/10 cycles and 0.5 mm/10 cycles.

Which is better, 0.5 or 1mm derma roller for hair growth?

A 0.5 mm derma roller has shorter needles, making it more gentle and suitable for beginners or those with sensitive scalps, while a 1.0 mm derma roller has longer needles that can create deeper micro-injuries, potentially leading to more significant hair growth stimulation but also carrying a higher risk of discomfort ...

How often should I microneedle my scalp 1.5 mm?

The most common protocol is to microneedle once every 1 to 2 weeks at a 0.6-1.5mm depth. Yes, there are many different protocols out there that have different frequencies and needle depths. If you decide you want to perform microneedling at home, consult with your dermatologist or hair loss medical professional first.

The Best Dermarolling Size for Quickest Hair Growth

What is the best depth to microneedle scalp?

Clinical studies have indicated that the optimal needle depth for microneedling is typically 1.5mm. This depth allows the needles to penetrate the dermis, accessing a greater supply of blood capillaries, which triggers a potent inflammatory response.

Does 1.5 mm microneedle hurt?

The pain from microneedling treatment depends on the size of the needle that is being used. The following needling sizes will not hurt: 0.25mm, 0.50mm and 1mm. The sizes where you may experience discomfort are 1.5mm, 2mm, 2.5mm or 3mm. The bigger you go, the more chance of some pain.

Can I use a 1.5 mm derma roller at home?

Safe for all skin types and perfect for home use with no pain or discomfort.

What are the side effects of minoxidil?

The most common side effects of topical minoxidil application are redness and irritation of the skin. Rarely, patients have reported headaches, palpitations, and dizziness. Oral minoxidil side effects include palpitations, dizziness, low blood pressure, chest pain, headaches, and swelling of the legs.

Can derma roller regrow hair without minoxidil?

Using a dermaroller for hair loss can be a great choice, especially for people who are unresponsive to topical minoxidil or oral finasteride.

What size microneedle do professionals use?

For treating acne and other scars as a routine, a needle length of 1.5–2 mm is usually used. When microneedling is used as a procedure to treat ageing skin and wrinkles, the needle length of 0.5 mm or 1.0 mm is usually recommended.

What to put on the scalp after microneedling?

Moisturizers to Use: Use lightweight, non-greasy moisturizers or serums designed for sensitive or healing scalps. Your hair clinic may provide or recommend products specifically formulated for post-microneedling care.

What mm microneedle is best for hair growth?

Needles measuring 0.6mm may be the most effective size for treating hair loss [4]. While 0.6mm isn't a common commercial size, 0.5mm derma rollers are widely available. So this is a good place to start if you haven't used a home derma roller or derma stamp before.

How long does it take for microneedling to work for hair growth?

Initiation of new hair growth was noticeable by around 6 weeks in Microneedling group and by 10 weeks in Minoxidil group. Rapid growth in the existing hair was seen at week 1 in the Microneedling group than Minoxidil group [Figure 8].

How do I know what needle size I need?

90/14 is typically regarded as a medium-weight needle, so you can start there for reference. If you are sewing with something lighter, like sheer cotton, you'll want a smaller needle, like an 80/12 or 75/11. And if you are sewing with something heavier, like denim, you'll want a larger needle like a 100/16 or 110/18.

Can microneedling revive dead hair follicles?

By stimulating hair follicles, increasing collagen production, and enhancing the absorption of topical treatments, microneedling can help to promote hair regrowth and improve scalp health.

Why is minoxidil not recommended?

Contraindications include the following: Minoxidil should not be used in patients with a known history of hypersensitivity to the drug or its constituents, including propylene glycol. The utilization of minoxidil is not recommended for pregnant and breastfeeding women.

Does minoxidil cause weight gain?

While you are taking minoxidil, weigh yourself every day. A weight gain of 2 to 3 pounds (about 1 kg) in an adult is normal and should be lost with continued treatment.

How often should I microneedle my scalp?

The cost of microneedling is an investment of both time and money. Treatments are usually every four weeks and, on average, 5 treatments are required. After the series is complete, maintenance is suggested to maintain and continue to promote hair growth and scalp health.

Which is better, 0.5 or 1mm derma roller for hair?

If your scalp tissue is highly sensitive, a 0.5mm roller will sufficiently permeate most scalp areas for absorption of hair growth serums. Based on multiple studies, choosing a 0.75mm or 1mm roller maximizes scalp penetration while remaining safe for regular use after an adjustment period.

Is 1.5 mm too deep for microneedling?

For the important long-term benefits of microneedling to be achieved it's vital that the dermis is affected. Some beauty therapists offer microneedling but they aren't allowed to needle beyond 1.5mm deep. In some areas a 1.5mm needle will not reach the dermis and so will have no effect on it.

What is the best size of derma roller for hair growth?

You must prefer a size range between 1.0 to 1.5 mm as these microneedles perfectly puncture the scalp and increase hair growth. You must always go for a derma roller with a curved handle that will facilitate a proper grip to massage the scalp properly.

Why did my microneedling hurt so bad?

Essentially, some people are more sensitive to pain than others. For individuals with a lower pain tolerance, the sensation caused by the microneedling process may feel more intense. However, many describe it as a feeling of light sandpaper being moved across the skin.

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