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Microneedling Rollers and Pens for Hair: Specs Compared

Four scalp rollers sold to consumers, compared by what each maker's own page states, plus one clinic pen for contrast. We have not tested any of them. Specs were read on October 15, 2026.

Last reviewed: Sources cited

Before the specs. According to the FDA's consumer update (content current as of 10/15/2025), no microneedling device is cleared for hair loss, none is authorized for over-the-counter sale, and re-using needle cartridges can cause or spread infection. Maker pages below make their own claims about hair. We do not repeat them.

How this comparison works

  • We list what each maker's product page says: needle length, count, material, replacement and cleaning advice.
  • We have not tested these products and we give no stars or scores.
  • We show no prices and we link to no stores. Each page was read on October 15, 2026 and we keep a dated capture.
  • Where a page does not state a spec, the table says so. That gap is useful to know.
Maker-stated specs, read October 15, 2026
ProductTypeNeedle lengthNeedlesMaterialReplacement
Scalp Activation Derma Roller (Scandinavian Biolabs)Roller0.5 mm540Stainless steelWhole roller after 8 to 10 uses
GRO+ Advanced Dermaroller (Vegamour)Roller, twist-off headNot stated on the page1,200Stainless steelHead monthly
StimuROLLER HAIR (DS Laboratories)Roller0.5, 0.3 or 1.0 mm options listed540TitaniumNot stated on the page
Microneedle Scalp Roller (Afsennah)Roller1.0 mmNot stated on the pageStainless steelNot stated on the page
SkinPen Precision Elite (clinic pen, FDA summary)Powered pen0 to 2.5 mm settings14 per cartridgeNot in the summarySterile single-use cartridge

The four scalp rollers

Scalp Activation Derma Roller

Scandinavian Biolabs · Roller

Needles
540 stainless steel needles, 0.5 mm long, per the product page.
Care, per the maker
Rinse under warm water, soak in 70 to 80 percent alcohol for about 5 to 10 minutes, then air dry. Never share. Replace the whole roller after 8 to 10 treatments, or at once if needles bend.
Schedule, per the maker
1 to 2 times a week.
Warnings, per the maker
Not for broken, inflamed or irritated skin.

Why it may not suit you. The maker advises replacing the whole roller every 8 to 10 uses, so it is a recurring purchase. The page pairs the roller with the maker's own serum, which we have not assessed.

GRO+ Advanced Dermaroller

Vegamour · Roller with replaceable head

Needles
1,200 stainless steel needles. Needle length is not stated on the page we read.
Care, per the maker
Clean with 70 percent isopropyl alcohol before and after each use, including the replacement head. Twist off the old head without touching the needles and dispose of it.
Schedule, per the maker
Start with 2 to 3 uses a week and build up to daily as tolerated. Replace the head monthly.
Warnings, per the maker
Scalp use only. Not for open wounds, irritated skin or people with a metal allergy. One person only.

Why it may not suit you. The maker's schedule rises to daily use, while the 2022 review reports sessions from weekly to monthly. Without a stated needle length you cannot line it up with any study. Monthly heads add a recurring cost, and the page ties the roller to the brand's own serum.

StimuROLLER HAIR

DS Laboratories · Roller

Needles
540 titanium needles. The page offers 0.5 mm, 0.3 mm and 1.0 mm options.
Care, per the maker
The product page we read gives no cleaning or replacement advice.
Schedule, per the maker
Not stated on the page.
What the page cites
The 2013 pilot study that we describe on what studies measured.

Why it may not suit you. That pilot paired weekly microneedling with a drug lotion in 100 men. It did not test this roller by itself, and the page does not say which device the pilot used. With no care or schedule guidance on the page, you would have to look elsewhere for hygiene advice.

Microneedle Scalp Roller

Afsennah · Roller

Needles
Stainless steel, 1.0 mm, which the page calls surgical grade. The page does not give a needle count.
Care, per the maker
The page we read gives no cleaning or replacement advice.
Schedule, per the maker
The usage steps say to roll in one direction 4 to 5 times per section. No weekly schedule is stated.
Certifications claimed
The page lists CE, ISO 9001 and ISO 13485. We have not verified these.

Why it may not suit you. At 1.0 mm it is twice the length of the 0.5 mm rollers above, so it reaches deeper. The page has no hygiene or replacement guidance and no needle count.

A clinic pen, for contrast

The public FDA 510(k) summary for the SkinPen Precision Elite System (K241400, August 29, 2024) describes a sterile, single-use cartridge with 14 needles and needle protrusion settings from 0 to 2.5 mm. Its cleared uses are wrinkles of the neck in skin types II to IV and facial acne scars in adults 22 and older of any skin type. It is not cleared for hair, and we include it only to show how a clinic pen is documented compared with a home roller.

No stamp is listed because we have not found one among the sources cited whose maker page states its specs.

How to read a spec sheet

  • Length. Longer needles reach deeper. The studies we cite used 0.5 to 2.5 mm under professionals.
  • Count. More needles means more punctures per pass, not more safety.
  • Material. Makers say stainless steel or titanium. One maker warns about metal allergy.
  • Replacement. Reusing worn or dirty needles is the hygiene problem. Look for how and when the maker says to swap.
  • Claims. Growth claims on a store page are not study results.

Read the at-home risks before you decide, and see how we review products.

Common questions

Which needle length is right for the scalp?

We do not recommend one. The clinical studies we cite used depths from 0.5 to 2.5 mm, run by professionals. Home rollers in the table range from 0.3 to 1.0 mm on the pages we read, and one maker does not state a length. A dermatologist is the right person to ask.

Are any of these cleared by the FDA?

Among the 26 records under the FDA's powered microneedle product code (QAI) on October 15, 2026, none is one of the four home products. Separately, the FDA says it has not authorized any microneedling medical device for over-the-counter sale and has not cleared any microneedling device for hair loss.

Why are there no store figures or links?

Store prices change often and we do not copy them. We also do not link to stores on this page. If that changes, we will say so on the page and on how we are paid.

Sources

  1. Maker product pages for the four rollers, read on October 15, 2026 (scandinavianbiolabs.com, vegamour.com, dslaboratories.com, afsennah.com). We keep a dated capture of each page.
  2. FDA 510(k) summary, K241400. Dated August 29, 2024.
  3. FDA consumer update on microneedling devices. Page content current as of 10/15/2025, read on October 15, 2026.
  4. FDA 510(k) database. Powered microneedle devices are listed under product code QAI. We read the public summaries on October 15, 2026.
  5. 2022 systematic review, PubMed. 22 clinical studies, 1,127 people, searched through November 2021. PMID 34854067.
  6. 2013 randomized pilot study, PubMed. 100 men with early to moderate pattern hair loss, 12 weeks. Weekly microneedling plus a drug lotion compared with the lotion alone. PMID 23960389.

Want to talk to a clinic?

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