25 Sep What Is Red Light Therapy? Benefits, Science & What to Expect | sweatspa
What is red light therapy?
At its core, red light therapy is the use of specific wavelengths of red and near-infrared light to stimulate your body’s natural healing processes. Unlike UV light, which damages skin cells and raises cancer risk, red light therapy uses wavelengths in the 630–850 nanometre range — safe, non-invasive, and deeply therapeutic.
It is thought to work by increasing the production of mitochondria (your cells’ energy sources) which may improve cell function and repair. Think of it as a charger for your cells: it doesn’t introduce anything foreign into your body. It simply gives your own cells the energy they need to do their jobs better.
WHAT IS IT?
Light as medicine: the basics
You’ve seen it on social media. You might have wondered if it actually works. Red light therapy (also called photobiomodulation or low-level laser therapy) is one of the most researched, fastest-growing wellness technologies of the past decade. And now, it’s available at sweatspa®.
Unlike UV light, which damages skin cells, red light therapy uses specific wavelengths of red and near-infrared light that are absorbed by your cells at a deep level — triggering a cascade of natural healing and regenerative processes.
How it works
What happens inside your cells
Unlike a traditional steam sauna that heats the air around you, infrared saunas use light waves that penetrate 4–5cm beneath the skin’s surface. This means your muscles, tissues, and joints absorb the heat directly — making it especially effective for the kind of deep, aching discomfort that comes with menstruation.
STEP 1
Light enters cells
STEP 2
Mitochondria activate
STEP 3
Healing begins
"Think of red light therapy as a charger for your cells. It doesn't introduce anything foreign into your body. It simply gives your own cells the energy they need to do their jobs better."
RLT VS TRADITIONAL
How it compares
Red light therapy
- Non-invasive, no downtime
- No UV damage risk
- Works at cellular level
- Cumulative results
- Pairs well with sauna
Traditional skincare
- Surface-level only
- Results vary by product
- Can cause irritation
- Ongoing product cost
- No cellular repair
The benefits
What the research supports
Skin rejuvenation
Inflammation relief
Muscle recovery
Mood & sleep
Wound healing
Hair growth
Is it safe? Who is it for?
Red light therapy is non-invasive, painless, and requires no downtime. Most people feel a gentle warmth during the session and nothing more. It is suitable for most skin types and ages, and pairs particularly well with infrared sauna therapy; the two modalities complement each other beautifully, working on different layers of the body simultaneously.
⚠️ Those who are pregnant, have photosensitive conditions, or are on photosensitising medications should check with their doctor before starting.