{"id":17001,"date":"2024-02-16T22:32:37","date_gmt":"2024-02-16T21:32:37","guid":{"rendered":"https:\/\/www.beautydecoded.com\/?page_id=17001"},"modified":"2026-05-30T11:18:50","modified_gmt":"2026-05-30T09:18:50","slug":"face-led","status":"publish","type":"page","link":"https:\/\/www.beautydecoded.com\/en\/face-led\/","title":{"rendered":"LED photomodulation: light for the skin!"},"content":{"rendered":"<div class=\"bd-brand\"><style>\n.bd-brand .bd-hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:8px}\n.bd-brand .bd-hub-card{display:flex;flex-direction:column;gap:8px;padding:24px 26px;background:rgba(255,255,255,0.6);border:1px solid rgba(255,255,255,0.95);border-radius:22px;backdrop-filter:blur(20px);text-decoration:none;transition:transform 0.25s ease,box-shadow 0.25s ease;box-shadow:0 10px 40px rgba(42,36,56,0.04)}\n.bd-brand .bd-hub-card:hover{transform:translateY(-4px);box-shadow:0 22px 55px rgba(42,36,56,0.1)}\n.bd-brand .bd-hub-card-tag{font-family:var(--bd-sans);font-size:11px;font-weight:600;color:var(--bd-accent);letter-spacing:0.06em;text-transform:uppercase}\n.bd-brand .bd-hub-card h3{font-family:var(--bd-serif);font-weight:500;font-size:20px;line-height:1.2;color:var(--bd-ink);letter-spacing:-0.01em;margin:0}\n.bd-brand .bd-hub-card-arrow{font-family:var(--bd-serif);font-style:italic;font-size:14px;color:var(--bd-accent);margin-top:auto;padding-top:4px}\n.bd-brand .bd-wave-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:8px}\n.bd-brand .bd-wave-card{padding:24px 26px;border-radius:22px;border:1px solid rgba(255,255,255,0.9);backdrop-filter:blur(20px);box-shadow:0 10px 40px rgba(42,36,56,0.05)}\n.bd-brand .bd-wave-card h4{font-family:var(--bd-serif);font-weight:500;font-size:19px;line-height:1.2;color:var(--bd-ink);margin:0 0 8px}\n.bd-brand .bd-wave-card .bd-wave-nm{font-family:var(--bd-sans);font-size:12px;font-weight:600;letter-spacing:0.04em;text-transform:uppercase;opacity:0.7}\n.bd-brand .bd-wave-card p{font-family:var(--bd-sans);font-size:14px;line-height:1.55;color:var(--bd-ink-soft,#5a5560);margin:6px 0 0}\n.bd-brand .bd-wave-blue{background:linear-gradient(160deg,rgba(120,160,235,0.18),rgba(255,255,255,0.55))}\n.bd-brand .bd-wave-yellow{background:linear-gradient(160deg,rgba(240,205,110,0.2),rgba(255,255,255,0.55))}\n.bd-brand .bd-wave-green{background:linear-gradient(160deg,rgba(150,210,160,0.2),rgba(255,255,255,0.55))}\n.bd-brand .bd-wave-red{background:linear-gradient(160deg,rgba(225,120,120,0.2),rgba(255,255,255,0.55))}\n.bd-brand .bd-promo{display:flex;align-items:center;gap:14px;padding:18px 24px;background:linear-gradient(135deg,var(--bd-blue-deep,#2a2438),var(--bd-accent,#7a5c8e));border-radius:18px;margin-top:8px}\n.bd-brand .bd-promo-code{font-family:var(--bd-sans);font-weight:700;font-size:15px;letter-spacing:0.06em;color:#2a2438;background:#faf6ef;padding:8px 16px;border-radius:100px;white-space:nowrap}\n.bd-brand .bd-promo p{font-family:var(--bd-sans);font-size:14.5px;line-height:1.5;color:rgba(250,246,239,0.92);margin:0}\n.bd-brand .bd-prob-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:8px}\n.bd-brand .bd-prob-card{padding:26px 28px;background:rgba(255,255,255,0.6);border:1px solid rgba(255,255,255,0.95);border-radius:22px;backdrop-filter:blur(20px);box-shadow:0 10px 40px rgba(42,36,56,0.04)}\n.bd-brand .bd-prob-card .bd-prob-num{font-family:var(--bd-serif);font-style:italic;font-size:26px;color:var(--bd-accent);line-height:1}\n.bd-brand .bd-prob-card h4{font-family:var(--bd-serif);font-weight:500;font-size:20px;line-height:1.2;color:var(--bd-ink);letter-spacing:-0.01em;margin:10px 0 8px}\n.bd-brand .bd-prob-card p{font-family:var(--bd-sans);font-size:14.5px;line-height:1.6;color:var(--bd-ink-soft,#5a5560);margin:0}\n.bd-brand>p:empty{display:none!important}\n.bd-brand>p{margin:0!important}\nhtml body .bd-brand .bd-section{padding:48px 0 !important}\nhtml body .bd-brand .bd-hero{padding-bottom:8px !important}\nhtml body .bd-brand .bd-hero .bd-hero-meta{margin-bottom:0 !important}\nhtml body .bd-brand .bd-dark{margin-top:24px !important;margin-bottom:24px !important}\nhtml body .bd-brand .bd-final{padding-top:48px !important;padding-bottom:48px !important;margin-top:0 !important}\n@media (max-width:900px){html body .bd-brand .bd-section{padding:36px 0 !important}html body .bd-brand .bd-hero{padding-top:56px !important}html body .bd-brand .bd-eyebrow{margin-top:8px}}\n<\/style><section class=\"bd-hero\" style=\"padding-bottom:8px !important;padding-top:56px !important\"><div class=\"bd-wrap\"><span class=\"bd-eyebrow\">Skincare guide - BeautyDecoded<\/span><h1>LED face - <em>benefits and how to choose your appliance<\/em> according to a doctor and analyses by BeautyDecoders.<\/h1><p class=\"bd-hero-sub\">Facial LED (photobiomodulation) uses cold light to stimulate cellular activity according to its color: red light (633 nm) and near-infrared light (830 nm) are best documented for rejuvenation, collagen and healing; blue light targets acne. For an effective device, check the precise wavelength, irradiance (40 to 100 mW\/cm\u00b2) and frequency of use compatible with your daily routine.<\/p><div class=\"bd-hero-meta\"><div class=\"bd-hero-meta-item\"><span>Approach<\/span><strong>Independent medical analysis<\/strong><\/div><div class=\"bd-hero-meta-item\"><span>Technology<\/span><strong>LED photobiomodulation<\/strong><\/div><div class=\"bd-hero-meta-item\"><span>Reference<\/span><strong>633 nm red - 830 nm infrared<\/strong><\/div><\/div><\/div><\/section><section class=\"bd-section\" style=\"padding-top:24px !important;padding-bottom:24px !important\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">Our LED guides<\/span><div class=\"bd-hub-grid\"><a class=\"bd-hub-card\" href=\"https:\/\/www.beautydecoded.com\/en\/face-led\/best-led-masks\/\"><span class=\"bd-hub-card-tag\">Comparison<\/span><h3>Best LED masks<\/h3><span class=\"bd-hub-card-arrow\">Read the guide \u2192<\/span><\/a><a class=\"bd-hub-card\" href=\"https:\/\/www.beautydecoded.com\/en\/best-led-headset\/\"><span class=\"bd-hub-card-tag\">Comparison<\/span><h3>Best LED headphones<\/h3><span class=\"bd-hub-card-arrow\">Read the guide \u2192<\/span><\/a><a class=\"bd-hub-card\" href=\"https:\/\/www.beautydecoded.com\/en\/danger-led\/\"><span class=\"bd-hub-card-tag\">Decoding<\/span><h3>Are LEDs dangerous?<\/h3><span class=\"bd-hub-card-arrow\">Read the guide \u2192<\/span><\/a><a class=\"bd-hub-card\" href=\"https:\/\/www.beautydecoded.com\/en\/facial-care\/anti-wrinkle-care\/\"><span class=\"bd-hub-card-tag\">Guide<\/span><h3>Anti-wrinkle care<\/h3><span class=\"bd-hub-card-arrow\">Read the guide \u2192<\/span><\/a><\/div><\/div><\/section><section class=\"bd-section\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">The principle<\/span><h2>What is the <em>photobiomodulation<\/em> ?<\/h2><p class=\"bd-lead\">Known to doctors since the 1950s, the benefits of light waves were indirectly revealed in the early 2000s by NASA's work on healing in weightlessness. Photobiomodulation diffuses cold light energy into the skin's layers; depending on the color (and therefore wavelength), the energy emitted by the diodes enhances cellular activity.<\/p><p>This technology is used in several fields: sports medicine (inflammation, recovery), oncology (side effects of treatments), neurology (pain), dermatology and aesthetic medicine (scarring, photoaging, photorejuvenation), and at home as a skincare tool (unifying skin tone, limiting acne, firming up, reducing wrinkles). The technique is painless, can be used in all seasons, and complements other treatments: the device is applied a few centimetres from the face, for between 1 and 45 minutes, on cleansed, make-up-free skin.<\/p><div class=\"bd-promo\"><span class=\"bd-promo-code\">Beautydecoded15<\/span><p>15 % off at Nooance with this code.<\/p><\/div><\/div><\/section><section class=\"bd-dark\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">A little physics<\/span><h2>What do you mean? <em>works<\/em><\/h2><p class=\"bd-lead\" style=\"color:rgba(250,246,239,0.9)\">Light is a wave carried by photons, whose energy can be absorbed by the skin. The spectrum is divided into three main categories, with one key rule: the longer the wavelength, the deeper the ray penetrates.<\/p><div class=\"bd-pillars-grid\"><div class=\"bd-pillar\"><div class=\"bd-pillar-num\">UV<\/div><h4>10-400 nm<\/h4><p>Invisible: they make you tan and synthesize vitamin D, but are responsible for melanoma.<\/p><\/div><div class=\"bd-pillar\"><div class=\"bd-pillar-num\">Screws<\/div><h4>400-700 nm<\/h4><p>Visible light: this is where some of the LED's wavelengths lie.<\/p><\/div><div class=\"bd-pillar\"><div class=\"bd-pillar-num\">IR<\/div><h4>700-1000 nm<\/h4><p>Invisible near infrared: stimulates the deep dermal matrix.<\/p><\/div><\/div><div class=\"bd-dark-quote\"><strong>The biological mechanism<\/strong><p>Not entirely understood, but light energy is thought to act at the molecular level, affecting cellular respiration and the production of ATP, the fuel of cells. The skin's chromophores (melanin, hemoglobin, opsin) absorb this energy; the cell metabolizes it, improving its functioning and promoting high-quality cell renewal.<\/p><\/div><\/div><\/section><section class=\"bd-section\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">By color<\/span><h2>Benefits according to <em>the light<\/em><\/h2><p class=\"bd-lead\">While red and near-infrared are the most commonly used colors in the office, recent studies have revealed the value of other visible colors.<\/p><div class=\"bd-wave-grid\"><div class=\"bd-wave-card bd-wave-blue\"><span class=\"bd-wave-nm\">~415 nm<\/span><h4>Blue light<\/h4><p>Penetrates the epidermis, especially used against acne bacteria (antibacterial, antiviral, anti-inflammatory). Usage debated: the UV\/blue borderline is poorly defined, and some studies suspect that it promotes more stubborn hyperpigmented areas on darker, darker skins.<\/p><\/div><div class=\"bd-wave-card bd-wave-yellow\"><span class=\"bd-wave-nm\">~585 nm<\/span><h4>Yellow light<\/h4><p>Acts on hyperpigmented areas by reducing melanin content, according to a 2018 in vitro study on melanocytes.<\/p><\/div><div class=\"bd-wave-card bd-wave-green\"><span class=\"bd-wave-nm\">495-570 nm<\/span><h4>Green light<\/h4><p>Would be beneficial for cellulite and tissue swelling, but this avenue still requires a great deal of study.<\/p><\/div><div class=\"bd-wave-card bd-wave-red\"><span class=\"bd-wave-nm\">633 &amp; 830 nm<\/span><h4>Red &amp; near infrared<\/h4><p>The most penetrating, down to the dermis. Proven effects on photorejuvenation and healing. Boost fibroblasts - hence collagen and elastin - and are also used to treat baldness.<\/p><\/div><\/div><\/div><\/section><section class=\"bd-dark\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">Zoom<\/span><h2>Red &amp; near infrared : <em>the best-documented<\/em><\/h2><p>A June 2021 in vivo study on human fibroblasts suggests that red and near-infrared radiation promotes the expression of certain genes and stimulates the synthesis of type 1 and 3 collagen precursors and elastin. They are recommended for correcting the signs of aging and repairing UV-traumatized tissue.<\/p><div class=\"bd-pillars-grid\"><div class=\"bd-pillar\"><div class=\"bd-pillar-num\">01<\/div><h4>Anti-aging<\/h4><p>Smoothes fine lines and wrinkles, densifies the dermis and improves tone.<\/p><\/div><div class=\"bd-pillar\"><div class=\"bd-pillar-num\">02<\/div><h4>Healing<\/h4><p>Accelerates and improves wound healing.<\/p><\/div><div class=\"bd-pillar\"><div class=\"bd-pillar-num\">03<\/div><h4>Anti-inflammatory<\/h4><p>Reduces chronic redness, acne, rosacea and improves tolerance of sensitive skin.<\/p><\/div><div class=\"bd-pillar\"><div class=\"bd-pillar-num\">04<\/div><h4>Hair<\/h4><p>In helmet form, improves baldness.<\/p><\/div><\/div><div class=\"bd-dark-quote\"><strong>Reference wavelengths<\/strong><p>Clinically, two precise wavelengths induce the desired effects: 633 nm (red) and 830 nm (near infrared). These are not approximate ranges, but specific values - a decisive criterion when choosing a device.<\/p><\/div><\/div><\/section><section class=\"bd-section\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">The right choice<\/span><h2>How to choose <em>its<\/em><\/h2><p class=\"bd-lead\">In-office devices are more powerful and supervised (\u20ac30 to \u20ac80 per 15- to 45-minute session). Home devices, slightly less powerful, extend the effects over time (from a few hundred to \u20ac1,000). As the effects are proportional to the frequency of use, it's best to refrain if you can't use it several times a week. Expect to pay between \u20ac300 and \u20ac1,000 for good value for money.<\/p><div class=\"bd-prob-grid\"><div class=\"bd-prob-card\"><div class=\"bd-prob-num\">01<\/div><h4>Precise wavelength<\/h4><p>For red and infrared, studies show specific values (630 and 830 nm), not a range. A lack of specificity may mean a lack of efficiency.<\/p><\/div><div class=\"bd-prob-card\"><div class=\"bd-prob-num\">02<\/div><h4>The price<\/h4><p>Diodes emitting specific wavelengths are more expensive to produce: a good device will be relatively expensive.<\/p><\/div><div class=\"bd-prob-card\"><div class=\"bd-prob-num\">03<\/div><h4>Irradiance<\/h4><p>In mW\/cm\u00b2, this is the energy received by the skin. Clinically effective devices offer 40 to 100 mW\/cm\u00b2; the value also depends on the distance of the diodes from the face.<\/p><\/div><div class=\"bd-prob-card\"><div class=\"bd-prob-num\">04<\/div><h4>Frequency<\/h4><p>It must be adapted to your lifestyle. The higher the irradiance, the shorter the session. A light, battery-powered device allows you to move around during the session.<\/p><\/div><\/div><\/div><\/section><section class=\"bd-section\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">Security<\/span><h2>Fears and <em>contraindications<\/em><\/h2><p class=\"bd-lead\">These devices are sometimes accused of using heat to melt away facial fat. Unlike radiofrequency, ultrasound or lasers, LED is a cold light that does not generate heat in tissues or target fat. There's no risk of volume loss.<\/p><p>On the other hand, people suffering from pathologies linked to light hypersensitivity (solar urticaria, lupus, chronic actinic dermatitis) should refrain from using light and seek professional advice. There are no scientific reports of side effects from red or near-infrared light.<\/p><div class=\"bd-alert bd-alert-info\"><span class=\"bd-alert-icon\">\u2713<\/span><div>Follow the manufacturer's instructions; don't use a face mask on your hands or arms (the device is calibrated for the density of facial tissue); protect your eyes as recommended; and good news for pregnant or breast-feeding women: LED masks present no known danger.<\/div><\/div><\/div><\/section><!-- ===== CTA APP (bd-final standard) ===== --><section class=\"bd-final\" style=\"padding-top:48px !important;margin-top:0 !important\"><div class=\"bd-wrap\"><div class=\"bd-final-inner\"><div class=\"bd-section-label\">Further information<\/div><h2>Analyze your cosmetics on <em>your skin profile<\/em>.<\/h2><p>The BeautyDecoded application lets you scan any cosmetic product to visualize its suitability for your skin type and needs, based on INCI analysis.<\/p><div class=\"bd-cta-wrap\" style=\"justify-content: center;\"><a href=\"https:\/\/beautydecoded.go.link\/88eZ2\" class=\"bd-cta\" target=\"_blank\" rel=\"noopener\">Discover BeautyDecoded<\/a><\/div><div class=\"bd-cta-meta\" style=\"margin-top: 16px;\">Application available on iOS and Android<\/div><\/div><\/div><\/section><section class=\"bd-section\"><div class=\"bd-wrap\"><span class=\"bd-section-label\">Frequently asked questions<\/span><h2>Your questions about <em>LED face<\/em><\/h2><div class=\"bd-faq-list\"><details class=\"bd-faq-item\"><summary>Which LED color for which problem?<\/summary><div class=\"bd-faq-answer\">Red light (633 nm) and near infrared light (830 nm) target aging, wrinkles and scarring. Blue light targets acne. Yellow light targets hyperpigmentation and green light swelling, but the latter two require further study.<\/div><\/details><details class=\"bd-faq-item\"><summary>Are home LED masks effective?<\/summary><div class=\"bd-faq-answer\">Yes, as long as you choose a device with the right wavelength (630\/830 nm), sufficient irradiance (40-100 mW\/cm\u00b2) and use it regularly. Results are less thorough than in the office, but the effects can be maintained over the long term.<\/div><\/details><details class=\"bd-faq-item\"><summary>How often should I use an LED mask?<\/summary><div class=\"bd-faq-answer\">The effects are proportional to the frequency of use: several sessions per week are required. The higher the irradiance of the device, the shorter the duration of each session. Follow the manufacturer's recommendations.<\/div><\/details><details class=\"bd-faq-item\"><summary>Can LEDs melt away facial fat?<\/summary><div class=\"bd-faq-answer\">No, this is a confusion with radiofrequency, ultrasound or lasers. LED is a cold light that does not generate heat in tissues or target fat: there is no risk of volume loss.<\/div><\/details><details class=\"bd-faq-item\"><summary>Is LED compatible with pregnancy?<\/summary><div class=\"bd-faq-answer\">Unlike many cosmetic active ingredients, LED masks are not known to present any danger during pregnancy or breastfeeding. In case of doubt or photosensitivity, seek professional advice.<\/div><\/details><\/div><\/div><\/section><div class=\"bd-sig\"><strong>Dr Sylvain David<\/strong><span>Plastic and aesthetic surgeon - Founder of BeautyDecoded<\/span><\/div><div class=\"bd-source\"><strong>Scientific sources<\/strong> - Mamalis A et al., <em>Low-level red plus near infrared lights combination induces expressions of collagen and elastin in human skin in vitro<\/em> ; <em>Differential response of human dermal fibroblast subpopulations to visible and near-infrared light<\/em> (PubMed); ; <em>Combined 633-nm and 830-nm LED treatment of photoaging skin<\/em> (PubMed); ; <em>Under the spotlight: mechanisms of photobiomodulation concentrating on blue and green light<\/em> (PubMed).<\/div><div class=\"bd-disclaimer\"><p>Information for educational purposes only. It does not replace a medical consultation and must be adapted to each individual. In the event of photosensitivity, pregnancy or doubt, medical advice is recommended. Always follow the manufacturer's instructions.<\/p><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Skincare Guide \u00b7 BeautyDecoded LED Facial Treatments \u2014 Benefits and How to Choose the Right Device, According to a Doctor and Analysis by the BeautyDecoders. LED facial therapy (photobiomodulation) uses cold light to stimulate cellular activity depending on its color: red light (633 nm) and near-infrared light (830 nm) are the best-documented for rejuvenation,\u2026<\/p>","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"enable","_kad_post_title":"hide","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-17001","page","type-page","status-publish","hentry"],"acf":[],"taxonomy_info":[],"featured_image_src_large":false,"author_info":{"display_name":"Beautydecoded","author_link":"https:\/\/www.beautydecoded.com\/en\/author\/sylvaindavid\/"},"comment_info":0,"_links":{"self":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/pages\/17001","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/comments?post=17001"}],"version-history":[{"count":8,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/pages\/17001\/revisions"}],"predecessor-version":[{"id":74521,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/pages\/17001\/revisions\/74521"}],"wp:attachment":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/media?parent=17001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}