Beauty Device Guides

What Is a Light Therapy Device in Beauty Care?
“Light therapy device” is a broad label. This guide explains LED skincare, separates PBM from other light treatments, and shows which documents help assess a device’s claims and safety.
Beauty LEDs, UV Phototherapy and SAD Lamps: Clearing Up “Light Therapy”
“Light therapy” can mean a skin LED device, medical UV phototherapy or a bright-light box for seasonal mood symptoms. Understand their different targets, why lux is not a skin dose,...
LED Light Therapy vs Photodynamic Therapy
LEDs can provide the light for photodynamic therapy, but a photosensitizing agent changes the intervention. Compare the evidence, preparation and safety requirements before interpreting a treatment claim.
LED vs IPL vs Laser: How Beauty Light Technologies Differ
LED, IPL and laser describe different light sources, while PBM, selective heating and ablation describe treatment effects. Learn how to identify the category, compare the same outcome and verify the...
What Do the Colors on a Multi-Color LED Device Actually Mean?
Seven LED color settings do not establish seven proven skin benefits. Learn to distinguish mixtures from single-band light and check each mode against its spectrum, delivered output and relevant human...
Blue Light vs Red Light for Acne: Different Evidence, Different Questions
Blue, red and combined LED acne studies answer different questions. Learn to match the device, population, comparator and outcome before interpreting a color claim—and separate evidence for breakouts from claims...
Red Light vs Near-Infrared Light for Skin
Red and near-infrared light differ in visibility and tissue interaction. Learn why penetration depth does not establish better facial results, and how to compare human evidence for a specific skin...