Broad-spectrum light used for pigmentation, redness, and photoaging. Primarily in-clinic procedure.
◆Moderate evidence
The Idea
Intense Pulsed Light (IPL) is a broad-spectrum light-based treatment used for pigmentation, redness, and photoaging. It is primarily administered in-clinic by trained professionals. The proposed mechanism of action involves selective photothermolysis, where the IPL device emits high-intensity pulses of light that target and damage specific skin structures, leading to subsequent removal or reduction of unwanted skin features.
What the Evidence Shows
Research suggests that IPL is effective in reducing pigmentation and photoaging, with studies indicating improvements in skin texture and appearance. A systematic review of 15 clinical trials found that IPL significantly reduced facial pigmentation and improved skin texture. However, evidence is limited regarding the optimal treatment parameters and long-term efficacy. Additionally, the quality of evidence varies across studies, with some reporting high dropout rates and inconsistent outcome measures.
Verdict
The current state of clinical use suggests that IPL is a viable treatment option for pigmentation and photoaging, but its effectiveness can vary depending on individual skin types and treatment parameters. While some studies indicate positive outcomes, the evidence base is limited, and more research is needed to fully understand its efficacy and safety.
Understanding evidence levels▼
In VitroCell or tissue culture experiments — no human or animal data.
Ex VivoSkin model or tissue experiments — not in living humans.
Animal StudyResults in animals only — may or may not translate to humans.
Small Human StudySmall or uncontrolled human study — preliminary results.
Controlled TrialControlled human study (often randomized) — stronger evidence.
Systematic ReviewSummary and analysis of existing published studies.
Meta-AnalysisStatistical pooling of results from multiple studies.
GuidelineProfessional guidance or consensus statement from a dermatology society.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Controlled TrialControlled human study, often randomized. Stronger evidence.Redness / Facial RednessPublished: February 1, 2026
Cream May Help Skin Recover After IPL Therapy
Researchers studied a cream with soothing ingredients to see if it could help skin recover after intense pulsed light (IPL) therapy. They found that the cream may improve skin hydration and reduce redness and discomfort. However, the study was small and more research is needed to confirm these findings.
Why it matters: Understanding how to help skin recover after IPL therapy could be important for people who undergo this treatment for skin rejuvenation.
A small, randomized, double-blind, split-face study with 30 healthy female subjects, with a short duration of 28 days, and no mention of industry funding.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Controlled TrialControlled human study, often randomized. Stronger evidence.Redness / Facial RednessPublished: January 28, 2026
IPL Facial Laser Hair Removal in Transgender Patients: A Four-Year Retrospective Review
Researchers studied the safety and effectiveness of intense pulsed light (IPL) laser hair removal in a group of 115 transgender patients. They found that most patients experienced common side effects like redness and swelling, but no serious complications occurred. The study suggests that personalized laser settings and close monitoring may be important for successful treatment.
Why it matters: This study may help skincare professionals understand how to safely and effectively use IPL laser hair removal for transgender patients.
This study was a retrospective review of existing patient data, which may not be as reliable as a prospective study. The sample size was relatively small, and more research is needed to confirm these findings.
Small Human StudySmall or uncontrolled human study. Results are preliminary.Published: December 31, 2025
IPL Risks in Skin of Colour: Safety Concerns in Australia
A small study in Australia looked at complications from intense pulsed light (IPL) treatments in people with skin of colour. Researchers found that IPL can cause problems, but the severity of these issues is not well understood. The study aimed to educate clinicians and consumers about IPL risks and offer safety recommendations.
Why it matters: This study may help people with skin of colour understand the potential risks of IPL treatments and make informed decisions about their skincare.
This case series has a small sample size and is based on real-world experiences, not a controlled trial.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Systematic ReviewSummary and analysis of existing published studies.Redness / Facial RednessPublished: December 16, 2025
Combining Lasers May Help Improve Scar Appearance
Researchers studied how combining different laser treatments can help improve the appearance of various types of scars. They found that using multiple laser sources together may be more effective than using just one, but more research is needed to confirm this. The study suggests that this approach may be particularly helpful for complex scars with multiple components.
Why it matters: Understanding how to effectively treat scars can be important for people who are looking for ways to improve their skin's appearance.
The available data are limited by small cohorts, heterogeneous protocols, and short follow-up periods. The study's findings are based on a narrative review of existing evidence, rather than a new, original study.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Controlled TrialControlled human study, often randomized. Stronger evidence.TretinoinAcnePublished: January 1, 2025
IPL and LED Phototherapy Compared for Acne Treatment
A small study compared the effectiveness of two types of light therapy, intense pulsed light (IPL) and light-emitting diode (LED), for treating moderate-to-severe acne in Asian patients. Researchers found that both treatments showed similar improvement in acne severity when combined with medication. However, the study was small and only lasted for four weeks.
Why it matters: This study may help inform treatment decisions for people with acne, but more research is needed to confirm its findings.
This study had a small sample size of 40 participants and only lasted for four weeks. The results may not be generalizable to other populations or longer treatment periods.
Small Human StudySmall or uncontrolled human study. Results are preliminary.Published: December 11, 2024
High-Energy Light Treatments for Vascular Skin Lesions: A Small Study
Researchers studied how high-energy light treatments, like intense pulsed light (IPL), affect dilated skin blood vessels. They used three different methods to measure the response of blood vessels to IPL. The study found that IPL treatments may help reduce vascular changes in the facial skin, but the effectiveness of these treatments varied depending on the measurement method used.
Why it matters: This study may help skincare professionals better understand how to use high-energy light treatments to improve the appearance of vascular skin lesions.
The study had a small sample size of 38 volunteers and only used one type of high-energy light source (IPL). The study's findings may not be generalizable to other types of vascular skin lesions or high-energy light treatments.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Controlled TrialControlled human study, often randomized. Stronger evidence.HyperpigmentationPublished: December 6, 2024
Early Treatment May Help Prevent Scarring After Facial Trauma
Researchers studied whether early treatment with intense pulsed light and a fractional erbium laser can prevent scarring after facial trauma. They found that patients who received this treatment had improved scar appearance compared to those who didn't. However, more research is needed to confirm these findings.
Why it matters: This study may help skincare professionals understand how to prevent scarring after facial trauma, which could lead to better treatment options for patients.
This study had a small sample size of 120 patients and followed them for only 1 year. Additionally, the treatment doses were adjusted based on individual patient characteristics, which may limit the generalizability of the results.
Small Human StudySmall or uncontrolled human study. Results are preliminary.Hyaluronic AcidPublished: October 21, 2024
Fractional Ablative CO Laser for Skin Rejuvenation: Expert Recommendations
A small group of dermatologists and plastic surgeons shared their experiences and recommendations for using fractional ablative CO lasers for skin rejuvenation. They suggested safety measures, treatment settings, and techniques to improve outcomes. The study found that most panelists consider active face infections a contraindication and recommend using anesthetics and prophylaxis.
Why it matters: Understanding expert recommendations for fractional ablative CO laser treatment may help individuals considering this skin rejuvenation option make informed decisions.
This study had a small sample size of 21 dermatologists and plastic surgeons, and the results may be biased due to the limited number of panelists and the focus on a specific device.
Small Human StudySmall or uncontrolled human study. Results are preliminary.AcnePublished: October 1, 2024
Combination Therapy May Help Improve Atrophic and Icepick Scars
Researchers studied a combination of intense pulsed light and high-intensity focused ultrasound to treat atrophic and icepick scars. The treatment involved four sessions over four weeks. A small study suggests that this combination may help improve the appearance of these scars.
Why it matters: Understanding how to treat atrophic and icepick scars can help individuals with acne and other skin conditions find more effective treatments.
This study had a small sample size of 22 patients and was conducted in a lab setting. The results may not be generalizable to a larger population or real-world settings.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Controlled TrialControlled human study, often randomized. Stronger evidence.AcnePublished: October 1, 2024
Combined Needle Radiofrequency and Intense Pulsed Light May Help Reduce Acne
A small study looked at using a device that combines needle radiofrequency and intense pulsed light to treat acne. Researchers found that this treatment may lead to a small improvement in acne lesions compared to not using the treatment. However, more research is needed to confirm these results.
Why it matters: This study may help skincare professionals understand new treatment options for acne, but it's too early to say for sure whether this treatment is effective or safe for everyone.
This study had a small sample size of 44 patients and only looked at the treatment's effects over 12 weeks.
Small Human StudySmall or uncontrolled human study. Results are preliminary.AcnePublished: October 1, 2024
Combining Light and Ultrasound May Help Reduce Acne Scars
Researchers studied a treatment combining intense pulsed light and high-intensity focused ultrasound to see if it could help reduce the appearance of atrophic and icepick acne scars. A small group of patients received this treatment and showed improvement, with one power setting being more effective than the other. The study found that this treatment may be a useful option for some people with acne scars.
Why it matters: This study may help skincare professionals understand new treatment options for people with acne scars.
This study had a small sample size of 22 patients and was conducted over a relatively short period of time.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Meta-AnalysisStatistical pooling of results from multiple studies.Redness / Facial RednessPublished: September 6, 2024
Rosacea Treatment: Intense Pulsed Light and Pulsed-Dye Laser Compared
Researchers studied how well intense pulsed light (IPL) and pulsed-dye laser (PDL) therapies work for treating rosacea. They found that IPL might be slightly better at clearing up rosacea symptoms, but both treatments can be effective. However, the study was small and more research is needed to confirm these findings.
Why it matters: Understanding the effectiveness of different treatments for rosacea can help people make informed decisions about their skincare.
This meta-analysis was based on data from four studies involving 141 participants, which is a relatively small sample size. More research is needed to confirm these findings and establish the optimal treatment algorithm for rosacea.