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.
Animal StudyResults in animals only. May or may not translate to humans.WrinklesPublished: May 2, 2026
Intense Pulsed Light May Help Rejuvenate UV-Damaged Skin
Researchers studied how intense pulsed light affects skin damaged by UV radiation. They found that it may help by reducing the activity of certain enzymes involved in skin aging. This was observed in lab experiments and animal studies.
Why it matters: Understanding how intense pulsed light affects skin aging may lead to new treatments for photoaging.
This study was conducted in lab experiments and animal studies, and its findings may not directly apply to human skin. Further research is needed to confirm these results.
◆ Notable findingA finding from a controlled trial, systematic review, or meta-analysis with noteworthy results.Systematic ReviewSummary and analysis of existing published studies.AcnePublished: April 29, 2026
Photodynamic Therapy in Skincare: Research Review
Photodynamic therapy (PDT) is a treatment that combines a light-sensitive medication, light, and oxygen to target skin issues. Researchers found that PDT may help with certain skin conditions, such as actinic keratosis and acne, but more research is needed to fully understand its effects. PDT was studied for its potential to treat various skin issues, including cancer, inflammation, and infections.
Why it matters: Understanding the potential benefits and limitations of PDT may help individuals with certain skin conditions make informed decisions about their treatment options.
The review included a comprehensive literature search, but the quality and consistency of the evidence varied across different skin conditions. Some studies had small sample sizes or were conducted in lab settings.
◆ 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.TretinoinRedness / Facial RednessPublished: January 1, 2026
Morbihan Disease May Cause Skin Inflammation Beyond the Face
Researchers studied a man with Morbihan disease, a rare skin condition, and found that it may cause inflammation in areas beyond the face. The patient developed skin problems on his inner thighs, trunk, and upper limbs. Treatment with isotretinoin provided sustained remission, but more research is needed to confirm these findings.
Why it matters: This study may help us better understand the progression of Morbihan disease and its potential impact on the body.
This case report is based on a single patient and requires further investigation to confirm its findings. The study's small sample size and lack of control group limit its conclusions.
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.
◆ 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: January 1, 2025
Phototherapy may help improve upper lip scars after cleft lip surgery
Researchers studied whether phototherapy, a treatment that uses light, can help improve the appearance of scars on the upper lip in people who had cleft lip surgery. They found that phototherapy may reduce the appearance of these scars, but more research is needed. The treatment was generally safe, with only temporary side effects.
Why it matters: Understanding how to improve the appearance of scars after cleft lip surgery may help people with this condition feel more confident in their appearance.
This study was a systematic review of existing research, which included nine studies with a total of unknown participants. The studies were published up to March 2024, and the review did not include any new data. The researchers found that phototherapy was generally safe, but more research is needed to confirm these findings.
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.