Is a 0.5 mm or 1 mm derma roller better?

Singh and Yadav describe 0.5 mm and 1.0 mm for certain clinician-led indications, and describe shorter home-care devices separately. Their review does not recommend a needle length for home use. Lumavir's roller is 0.5 mm.

What does the evidence say about dermarolling the scalp for hair growth?

Tieu et al.'s review included three studies of dermarollers used alone for hair loss, two in people and one in animals. Human findings were inconsistent across varied methods. The review does not establish a home scalp routine. The NHS advises seeing a GP to find out the cause of hair loss.

What needle size is Lumavir’s derma roller?

Lumavir's Derma Roller 0.5mm has 0.5 mm needles and is intended for home use on the face, beard area and scalp. Singh and Yadav and MNT describe shorter home devices; Singh and Yadav also describe medical and clinician-led contexts.

Who should ask a healthcare professional before using a roller?

Ask a GP or dermatologist first if a health condition, skin concern, medicine or recent treatment could affect your suitability. Singh and Yadav, Chelsea and Westminster Hospital and MNT describe cautions in clinical or editorial contexts. The NHS advises discussing anticoagulants before an invasive procedure.

What should I do if skin looks infected after rolling?

The NHS lists hot, swollen or red skin as possible signs of infection. Contact your GP if these appear after rolling, or if you are worried about a reaction. Do not pick or scrub acne-prone skin.

Is there evidence that a derma roller helps beard growth?

Tieu et al. reviewed dermarollers used alone for hair loss. The review included three studies and found inconsistent findings in people, but it does not establish a beard-growth outcome. The NHS advises seeing a GP if you are worried about hair loss.

Derma Rolling at Home: Evidence and Risks

What is a derma roller?

A derma roller has a handle and a small barrel covered in fine needles. The US Food and Drug Administration (FDA) describes manual microneedling rollers as devices that create repeated puncture holes when rolled or stamped over skin. Microneedling also includes procedures using other devices.

Chelsea and Westminster Hospital NHS Foundation Trust describes its service as a day-case procedure carried out by trained scar therapists. Health Education England's framework sets training scopes for practitioners using manual and powered microneedling. It places manual microneedling up to 1.5 mm and powered microneedling up to 1.0 mm within a practitioner competency framework, not a home-use recommendation. Lumavir's Derma Roller 0.5mm is intended for home use on the face, beard area and scalp.

The FDA's US guidance says it has authorised only a limited number of microneedling devices for particular uses and body areas. It advises discussing suitability, medicines and aftercare with a health professional.

A derma roller being rolled across the cheek

Does derma rolling work?

Singh and Yadav and Iriarte et al. review clinical microneedling procedures and indications. Healthline distinguishes home rollers from in-office treatment, while Medical News Today (MNT) discusses home and clinical microneedling as health editorial. Lumavir makes no treatment-outcome claim for its roller.

In the retrospective study by Aust et al., 480 patients in South Africa and Germany received clinician treatment with a medical roller for several skin concerns. Most had one treatment, while some had up to four. Histology was examined in 20 patients six months later. This was a clinical series, not a study of a consumer roller used at home.

Needle size: 0.5 mm or 1 mm?

Needle lengths vary by device and procedure. Singh and Yadav describe home-care rollers under 0.15 mm, a separate home device at about 0.2 mm, and standard medical rollers usually measuring 0.5 to 3 mm. They also describe 0.5 mm or 1.0 mm for certain clinician-led indications and 1.5 to 2 mm in clinical scar treatment. Those categories describe different devices and settings, not a recommendation to choose one length.

MNT, a health editorial, describes home-care rollers with needles under 0.15 mm. Singh and Yadav describe 0.5 mm and 1.0 mm for certain clinician-led indications, and do not recommend a needle length for home use. Lumavir's roller is 0.5 mm.

Singh and Yadav's categories describe devices and clinical indications. Health Education England's lengths for manual and powered microneedling sit within a practitioner training framework, not consumer guidance. Check the stated length and intended use of any roller, then follow the instructions in its box. If a health condition, medicine or recent treatment may affect your decision, ask a healthcare professional first.

Source and context	Needle lengths described
Singh and Yadav: home-care rollers	Under 0.15 mm
Singh and Yadav: separate home device	About 0.2 mm
Singh and Yadav: standard medical rollers	Usually 0.5 to 3 mm
Singh and Yadav: certain clinician-led indications	0.5 mm or 1.0 mm
MNT, health editorial: home-care rollers	Under 0.15 mm
Lumavir Derma Roller 0.5mm	0.5 mm

Risks described in microneedling research

Singh and Yadav's clinical review describes erythema and irritation, post-inflammatory hyperpigmentation, acne aggravation, herpes reactivation, allergic granulomatous reactions and local infection as reported events. These are reported in clinical literature, not rates for Lumavir's roller.

For its clinical procedure, Chelsea and Westminster Hospital lists warmth, redness, discomfort, peeling, pinpoint bleeding, temporary or permanent pigment change and a small infection risk. Health Education England's practitioner framework lists possible complications including pain, bleeding, infection, blood-borne infection, scarring and pigment change. The FDA also lists infection, skin damage, pigment changes and reactions as potential risks of microneedling devices.

Iriarte et al. report granulomatous reactions after microneedling with topical products not approved for intradermal injection. Ask a qualified professional about aftercare if you are unsure.

Who should ask a professional first?

Singh and Yadav's clinical review lists active acne, herpes or another local infection, moderate to severe eczema or psoriasis, blood disorders or anticoagulant treatment, a strong tendency to keloid scarring, and chemotherapy or radiotherapy as clinical cautions. Chelsea and Westminster Hospital's checklist for its procedure lists pregnancy, active skin infection including cold sores, a history of keloid scarring, active skin cancer, recent sun exposure and recent laser treatment. These are clinical procedure precautions.

Ask a GP or dermatologist before using a needling device if a health condition, skin concern or recent treatment may affect your suitability. The NHS advises people taking anticoagulants to tell healthcare professionals before an invasive procedure because cuts can cause heavy bleeding. Ask your prescriber or pharmacist about your medicine. Do not stop a prescribed medicine on your own. The NHS wording concerns invasive procedures and bleeding from cuts.

MNT, a health editorial, advises speaking with a dermatologist or healthcare professional before trying a roller. It names blood-clotting problems or blood thinners, eczema, sunburn, cold sores, moles, skin inflammation and rosacea among reasons to avoid use or seek advice.

Using the roller at home

The instructions in the box cover technique, hygiene and replacement. Follow them for this device. MNT, a health editorial, says not to share a roller and advises keeping it in a case. That is general editorial advice, not a device-specific direction.

After its clinical procedure, Chelsea and Westminster Hospital advises patients to keep treated skin clean and provides aftercare information. The FDA advises discussing aftercare and medicines with a health professional.

Microneedling punctures skin. Contact a GP if skin becomes hot, swollen or red, which the NHS lists as possible signs of infection.

Face, beard area and scalp

Lumavir's Derma Roller 0.5mm is intended for the face, beard area and scalp. For everyday skincare products, browse our skincare range.

Tieu et al. reviewed dermarollers used alone for hair loss. Their review included three studies, two in people and one in animals. Human findings did not agree, and the studies differed in needle length, frequency, duration and outcomes. The authors describe the evidence as limited and inconsistent and call for larger randomised trials.

Hair loss has different causes, the NHS says. Some types may be temporary and others permanent. If you are worried about hair loss, the NHS advises seeing a GP to find out the cause before considering a commercial hair clinic. For related reading, see our scalp massage guide.

Spider veins and clinical procedures

Ask a GP or dermatologist whether needling is appropriate over spider veins before using a device there. Chelsea and Westminster Hospital's checklist describes precautions for its clinical procedure, while FDA guidance covers microneedling devices and general risks.

If you are considering a clinic procedure, ask the provider what it is intended to address, what qualifications they hold, whether your medicines matter, what risks apply and what aftercare involves.

Alternatives and where to get advice

For acne, the NHS advises not to pick or squeeze spots or scrub skin, as this can irritate skin and worsen acne. It recommends GP advice for deep or painful spots, worsening acne or signs of infection such as hot, swollen or red skin. Singh and Yadav's clinical review lists active acne among its cautions; ask a healthcare professional before using a roller over active spots.

If you are worried about hair loss, the NHS advises seeing a GP to find out the cause before considering a commercial hair clinic. The NHS advises people taking anticoagulants to tell healthcare professionals before an invasive procedure because cuts can cause heavy bleeding. Ask your prescriber or pharmacist about your medicine, and do not stop a prescribed medicine on your own.

How we put this guide together

This guide uses advice from the NHS and Chelsea and Westminster Hospital, microneedling reviews, US FDA guidance and health editorial from Medical News Today and Healthline.

Lumavir makes no treatment-outcome claim for its 0.5 mm roller. Last updated on 24 October 2026.

Frequently asked questions

What are the benefits of a derma roller?: Lumavir makes no treatment-outcome claim for its roller. Singh and Yadav and Iriarte et al. review clinical microneedling procedures and indications; Healthline and MNT discuss home rollers as health editorial.
Can I microneedle my spider veins?: Ask a GP or dermatologist whether needling is appropriate over spider veins before using a device there. Chelsea and Westminster Hospital's checklist describes precautions for its clinical procedure, while FDA guidance covers microneedling devices and general risks.
Is a 0.5 mm or 1 mm derma roller better?: Singh and Yadav describe 0.5 mm and 1.0 mm for certain clinician-led indications, and describe shorter home-care devices separately. Their review does not recommend a needle length for home use. Lumavir's roller is 0.5 mm.
Can derma rollers work?: Clinical studies describe particular procedures and indications. Aust et al.'s retrospective series involved clinician treatment with a medical roller for several skin concerns; it did not study a consumer roller used at home. Lumavir makes no treatment-outcome claim for its roller.
What does the evidence say about dermarolling the scalp for hair growth?: Tieu et al.'s review included three studies of dermarollers used alone for hair loss, two in people and one in animals. Human findings were inconsistent across varied methods. The review does not establish a home scalp routine. The NHS advises seeing a GP to find out the cause of hair loss.
What needle size is Lumavir’s derma roller?: Lumavir's Derma Roller 0.5mm has 0.5 mm needles and is intended for home use on the face, beard area and scalp. Singh and Yadav and MNT describe shorter home devices; Singh and Yadav also describe medical and clinician-led contexts.
Who should ask a healthcare professional before using a roller?: Ask a GP or dermatologist first if a health condition, skin concern, medicine or recent treatment could affect your suitability. Singh and Yadav, Chelsea and Westminster Hospital and MNT describe cautions in clinical or editorial contexts. The NHS advises discussing anticoagulants before an invasive procedure.
Can I apply skincare through freshly needled skin?: Iriarte et al. report granulomatous reactions after microneedling with topical products not approved for intradermal injection. Ask a qualified professional about aftercare if you are unsure what to apply. The clinic's advice may depend on the procedure and your circumstances.
What should I do if skin looks infected after rolling?: The NHS lists hot, swollen or red skin as possible signs of infection. Contact your GP if these appear after rolling, or if you are worried about a reaction. Do not pick or scrub acne-prone skin.
Is there evidence that a derma roller helps beard growth?: Tieu et al. reviewed dermarollers used alone for hair loss. The review included three studies and found inconsistent findings in people, but it does not establish a beard-growth outcome. The NHS advises seeing a GP if you are worried about hair loss.