What are LED Masks and how do they work?
LED(light emitting - diode) therapy works by delivering specific wave- lengths of light energy into the skin to stimulate natural cellular
processes . This mechanism, known as photo biomodulation, can trigger collagen production , improve circulation, and reduce inflammation.
Different colours of light target different concerns: Red light (630-660 nm) boosts fibroblast activity , promoting collagen and elastin for firmer ,
smoother skin . Near infrared light (around 830 nm) penetrates deeper, supporting cellular repair and circulation. Blue light (415 nm) works closer
to the surface, killing acne- causing bacteria and reducing oil production.
What does the science say?
Research around the use of LED in skincare varies in quality, but there's growing evidence to support its bene- fits . A 2005 clinical trial using red and
near- infrared therapy reported that over 80% of participants experienced softer fine lines and improved tone after 12 weeks . More recent research
continues to strengthen the case: A 2025 meta -analysis of red and blue at- home devices found they were effective intreating mild to moderate acne . Sceptics point out that most high- quality clinical studies are done with professional -grade LED machines used by dermatologists not consumer masks, and, because at- home devices are sold as cosmetic products , not medical devices , they aren't held to the same standards.
"Results depend on wavelength, dose, and consistency, " explains Dr Edel Woods , owner of The Ora Clinic.
"The best supported wavelengths are around 630-850 nm for collagen stimulation and 415 nm for acne reduction . "
Dr Caitriona Ryan , consultant dermatologist at the Institute of Dermatologists and clinical professor at University College Dublin
What to look for when buying one:
With dozens of options on the market,
choosing the right LED mask can be confusing. Here's a summary ofwhat the experts advise you look for before making a purchase .
■Wavelengths : Ideally 630-660 nm (red ) , 830 nm(near -infrared) , and 415 nm( blue )
■Fit:Look for a lose , even fit , to ensure full- face light coverage
■Eye protection: Built- in or supplied, to protect your eyes from the light's glare
■Regulatory approvals : FDA clearance or CE marking
■Transparent data: Reputable brands cite published studies or clinical testing
"Be wary of devices that are very cheap or vague about specifications, " warns Dr Ryan . " They may lack the wavelength precision or power output needed for real results ." If you do make a purchase, remember that consistency is crucial. Most experts recommend using an LED mask three to five times per week for 10-20 minutes per session . Visible improvements in texture, tone, and glow usually appear within four to eight weeks.
Our Pick - Skin Krush
Created by Irish nurses Sinéad Gallagher and Jeanette Dunne, Skin Krush brings professional -grade phototherapy to your home with the first Irish made devices . Two options are available . The Rejuvenating LED Face Mask uses Red (633 nm) and near-infrared (830 nm) light to boost
collagen and radiance . The Clear and Calming Mask combines Blue (415 nm) and Red (633 nm) light to calm acne and inflammation. Each mask requires only 10 minutes, three to five times
