device

Low-Level Laser Therapy

29 linked papers with evidence grade B.

Product links

No direct Denser product mapped yet. Still useful for comparison and education.

Evidence Grade

B

Linked Papers

29

Participants

5,290

Average Efficacy

13.12 hairs/cm²

Summary

29 linked papers with evidence grade B.

Best indexed study: Management of androgenic alopecia: a systematic review of the literature. (2024)

Side Effects

No significant difference in adverse event rates between combination therapy and minoxidil alone.1 study
No significant difference in adverse event rates between laser+minoxidil and minoxidil alone groups (RR=1.50, 95% CI 0.95-2.36)1 study
sexual adverse effects (finasteride/dutasteride)1 study
hypertrichosis (oral minoxidil)1 study
dizziness (oral minoxidil)1 study
lower limb edema (oral minoxidil)1 study

Linked studies

Papers behind Low-Level Laser Therapy

Comparative efficacy of minoxidil alone versus minoxidil combined with low-level laser therapy in the treatment of androgenic alopecia: a systematic review and meta-analysis.

The Journal of dermatological treatment · 2025 · Alosaimi A, Algarni A, Alharbi A, Alotaibi A, Alomairi A, Alsurayhi M, Alharbi W

Confidence

moderate

Combining minoxidil with low-level laser therapy did not produce a statistically significant improvement in hair count or hair diameter compared to minoxidil alone in patients with androgenic alopecia.

Extracted key result

-0.04 hairs/cm²

Sample size not extracted

Combination LLLT and minoxidil produced significantly greater increases in hair density and hair shaft diameter, and higher patient satisfaction, compared to minoxidil monotherapy.

Extracted key result

6.62 hairs/cm²

Sample size not extracted

The role of microtrauma in hair regrowth and regeneration in non-scarring alopecia.

Italian journal of dermatology and venereology · 2025 · Tay WC, Cheng SW, Lee JS, Clavel C, Wang EC

Confidence

moderate

Microtrauma-based treatments like microneedling, lasers, and PRP increase hair density and thickness in androgenetic alopecia and promote regrowth in alopecia areata.

Extracted key result

increased not specified

Sample size not extracted

A Canadian Consensus on Androgenetic Alopecia: Approach and Management.

Journal of cutaneous medicine and surgery · 2025 · Landells I, Chow E, Gupta AK, Jasso Olivares JC, Thuraisingam T, Ahluwalia R, Tan JKL, Pratt M, Yadav G, Chivers Q, Vezina N, Laforest T, Raad E, Owen J, Dayeh NR

Confidence

moderate

A consensus of experts identified seven recommended interventions for AGA, including oral and topical finasteride, dutasteride, and minoxidil, while identifying 17 interventions that are not recommended.

Extracted key result

7 interventions

Sample size not extracted

Gray Hair: From Preventive to Treatment.

Clinical, cosmetic and investigational dermatology · 2025 · Herdiana Y

Confidence

low

The review identifies topical melanin stimulants, antioxidants, dietary supplements, and LLLT as promising approaches for managing gray hair.

Extracted key result

Pending structured analysis

Sample size not extracted

Chemotherapy-Induced Alopecia by Docetaxel: Prevalence, Treatment and Prevention.

Current oncology (Toronto, Ont.) · 2024 · Perez AM, Haberland NI, Miteva M, Wikramanayake TC

Confidence

moderate

Scalp cooling is the current standard for preventing chemotherapy-induced alopecia; minoxidil, photobiomodulation, and PRP are used to promote hair regrowth, though supporting evidence varies.

Extracted key result

Pending structured analysis

Sample size not extracted

Status of research on the development and regeneration of hair follicles.

International journal of medical sciences · 2024 · Liu D, Xu Q, Meng X, Liu X, Liu J

Confidence

moderate

Emerging therapies such as low-level laser therapy, microneedling, platelet-rich plasma, and stem cell therapy show promise for promoting hair regrowth, while conventional treatments like minoxidil and finasteride remain effective but have limitations.

Extracted key result

Pending structured analysis

Sample size not extracted

Management of androgenic alopecia: a systematic review of the literature.

Journal of cosmetic and laser therapy : official publication of the European Society for Laser Dermatology · 2024 · Rosenthal A, Conde G, Greco JF, Gharavi NM

Confidence

high

Various over-the-counter, prescription, and procedural treatments successfully promote hair growth, suggesting that a multifaceted, individualized approach is most effective.

Extracted key result

Pending structured analysis

Sample size not extracted

Confidence

low

Laser and light therapy combined with topical minoxidil significantly reduces alopecia severity scores and improves treatment response compared to minoxidil alone, with lower recurrence at 1 year and similar adverse event rates.

Extracted key result

-5.88 (95% CI -9.79 to -1.98) score points

Sample size not extracted

What's New in Therapy for Male Androgenetic Alopecia?

American journal of clinical dermatology · 2023 · Saceda-Corralo D, Domínguez-Santas M, Vañó-Galván S, Grimalt R

Confidence

moderate

Various treatments including 5-alpha reductase inhibitors, oral minoxidil, and PRP show efficacy, though evidence for some newer or non-pharmacological methods remains limited.

Extracted key result

0.25 %

Sample size not extracted

Treatment of Androgenetic Alopecia: Current Guidance and Unmet Needs.

Clinical, cosmetic and investigational dermatology · 2023 · Kaiser M, Abdin R, Gaumond SI, Issa NT, Jimenez JJ

Confidence

low

Standard treatments like topical minoxidil and oral finasteride are established, while newer modalities like PRP, LLLT, and oral minoxidil show encouraging results but lack standardized protocols.

Extracted key result

Pending structured analysis

Sample size not extracted

Lasers, lights, and compounds for hair loss in aesthetics.

Clinics in dermatology · 2022 · Ring CM, Finney R, Avram M

Confidence

moderate

The review discusses various promising topical, oral, and energy-based therapies, noting growing evidence for their efficacy in treating hair loss.

Extracted key result

Pending structured analysis

Sample size not extracted

Advances in hair growth.

Faculty reviews · 2022 · Wall D, Meah N, Fagan N, York K, Sinclair R

Confidence

low

The review outlines various current and emerging therapies for hair loss, including pharmacological agents, devices, and cellular therapies.

Extracted key result

Pending structured analysis

Sample size not extracted

Female pattern hair loss: A comprehensive review.

Dermatologic therapy · 2021 · Bertoli MJ, Sadoughifar R, Schwartz RA, Lotti TM, Janniger CK

Confidence

high

The review discusses the pathophysiology and various emerging treatments such as microneedling, LLLT, and autologous fat transfer for female pattern hair loss.

Extracted key result

Pending structured analysis

Sample size not extracted

Efficacy of non-surgical treatments for androgenetic alopecia: a systematic review and network meta-analysis.

Journal of the European Academy of Dermatology and Venereology : JEADV · 2019 · Gupta AK, Mays RR, Dotzert MS, Versteeg SG, Shear NH, Piguet V

Confidence

low

Low-level laser therapy showed superior relative effects for hair regrowth compared to other non-surgical treatments, while PRP, finasteride, minoxidil, and dutasteride demonstrated approximately equivalent mean changes in hair count.

Extracted key result

LLTT superior; PRP, finasteride 1 mg (male), finasteride 1 mg (female), minoxidil 5%, minoxidil 2%, dutasteride (male) approximately equivalent mean change in hair count

Sample size not extracted

Guidelines for the diagnosis and treatment of male-pattern and female-pattern hair loss, 2017 version.

The Journal of dermatology · 2018 · Manabe M, Tsuboi R, Itami S, Osada SI, Amoh Y, Ito T, Inui S, Ueki R, Ohyama M, Kurata S, Kono T, Saito N, Sato A, Shimomura Y, Nakamura M, Narusawa H, Yamazaki M

Confidence

moderate

First-line therapies recommended include oral finasteride 1 mg daily, oral dutasteride 0.5 mg daily, topical 5% minoxidil twice daily for MPHL and topical 1% minoxidil twice daily for FPHL, along with low-level laser therapy and hair transplantation.

Extracted key result

Pending structured analysis

Sample size not extracted

New Treatments for Hair Loss.

Actas dermo-sifiliograficas · 2018 · Vañó-Galván S, Camacho F

Confidence

moderate

The review highlights several emerging therapies, including novel excipients for oral minoxidil, dutasteride, and finasteride; topical prostaglandin modulators; low-level laser therapy; Wnt pathway activators and stem cell treatments for androgenetic alopecia; JAK inhibitors for alopecia areata; antiandrogens and pioglitazone for frontal fibrosing alopecia; and robotic-assisted follicular unit extraction for hair transplantation.

Extracted key result

Pending structured analysis

Sample size not extracted

Hair Transplantation Controversies.

Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.] · 2017 · Avram MR, Finney R, Rogers N

Confidence

moderate

Hair transplant surgery is effective for creating natural-appearing hair in men, though optimal harvesting techniques and adjunctive therapies remain subjects of debate.

Extracted key result

consistently natural appearing hair qualitative

Sample size not extracted

Interventions for female pattern hair loss.

The Cochrane database of systematic reviews · 2016 · van Zuuren EJ, Fedorowicz Z, Schoones J

Confidence

moderate

Topical minoxidil shows moderate efficacy in increasing hair regrowth and hair count in women with FPHL, with no clear advantage of 5% over 2% concentration; oral finasteride 1 mg is not more effective than placebo; low-level laser therapy may increase hair count but clinical relevance is uncertain.

Extracted key result

13.18 hairs/cm²

5290 participants

Low level laser therapy and hair regrowth: an evidence-based review.

Lasers in medical science · 2016 · Zarei M, Wikramanayake TC, Falto-Aizpurua L, Schachner LA, Jimenez JJ

Confidence

moderate

FDA-cleared LLLT devices are safe and effective for promoting hair regrowth in MPHL and FPHL patients who have not responded to or cannot tolerate standard therapies.

Extracted key result

Pending structured analysis

Sample size not extracted

Female pattern alopecia: current perspectives.

International journal of women's health · 2014 · Levy LL, Emer JJ

Confidence

moderate

Current treatments (minoxidil, finasteride) offer limited and non-permanent benefits; hair transplantation is the only permanent option, while other off-label agents and laser therapies are commonly used despite modest or inconsistent efficacy.

Extracted key result

Pending structured analysis

Sample size not extracted

Low-level laser (light) therapy (LLLT) for treatment of hair loss.

Lasers in surgery and medicine · 2014 · Avci P, Gupta GK, Clark J, Wikonkal N, Hamblin MR

Confidence

moderate

LLLT appears safe and effective for promoting hair regrowth in both men and women by stimulating epidermal stem cells and shifting follicles into the anagen phase.

Extracted key result

Pending structured analysis

Sample size not extracted

Promising therapies for treating and/or preventing androgenic alopecia.

Skin therapy letter · 2012 · McElwee KJ, Shapiro JS

Confidence

low

Minoxidil and finasteride remain the standard treatments, with hair transplantation as a surgical option; dutasteride, ketoconazole, and prostaglandin analogues (latanoprost, bimatoprost) are used or under investigation, and low-level laser therapy is gaining popularity, though robust clinical trial data proving hair growth efficacy are limited.

Extracted key result

Pending structured analysis

Sample size not extracted