Frequently asked questions

Red light therapy — also known as photobiomodulation or low-level laser therapy — is the use of specific wavelengths of red and near-infrared light to stimulate cellular function. When absorbed by the mitochondria in your cells, these wavelengths boost ATP (cellular energy) production, triggering a cascade of beneficial biological responses including collagen synthesis, reduced inflammation, and accelerated tissue repair. It has been studied clinically for over 50 years and is used in dermatology, physiotherapy, and sports medicine worldwide.

660nm red light is visible to the eye and works primarily at the surface level — it's absorbed efficiently by skin tissue and is most effective for collagen production, skin tone, texture, fine lines, and wound healing. 850nm near-infrared light is invisible to the eye and penetrates significantly deeper — into muscle, joint, and bone tissue — making it the wavelength for recovery, inflammation reduction, and pain relief. The Spare Sun panel delivers both simultaneously, covering the full spectrum of benefits in a single session.

No — they are fundamentally different. Sunbeds emit UV radiation which damages DNA and causes skin ageing and cancer risk. Infrared saunas use far-infrared heat to raise your core body temperature. Red light therapy uses specific narrow wavelengths of red and near-infrared light at a non-thermal intensity — there is no UV, no significant heat, and no radiation risk. The mechanism is photochemical, not thermal — the light triggers cellular responses directly rather than through heat.

Irradiance is the measure of light energy delivered per unit area — expressed in mW/cm². It determines how much therapeutic light your cells actually receive per session. Clinical studies consistently use panels delivering 100mW/cm² or above to produce measurable results. Many budget panels advertise high LED counts but deliver 40–80 mW/cm² in practice — below the therapeutic threshold. The Spare Sun panel delivers over 170 mW/cm² at 6 inches, ensuring every session delivers clinically meaningful light energy.

6–12 inches is the optimal treatment distance for the Spare Sun panel. At 6 inches you receive the full rated irradiance of over 170 mW/cm². Light intensity follows the inverse square law — double the distance and you receive approximately a quarter of the energy. For facial treatments, 6 inches is ideal. For larger body areas, 6–10 inches works well. You may feel gentle warmth but should never feel heat or discomfort — if you do, move back slightly.

10–20 minutes per session is the sweet spot. More is not necessarily better — cells have a saturation point beyond which additional light energy produces diminishing returns and can temporarily inhibit the response. Consistency matters far more than session length. 10 minutes every day will outperform 60 minutes once a week, every time. If you're new to red light therapy, start with 5–10 minutes and build up gradually over the first two weeks.

It depends on your goal. Morning sessions are best for energy, focus, and mood — the light stimulates ATP production and sets a positive cellular tone for the day. Evening sessions are effective for sleep quality and recovery — red light supports melatonin production and helps wind the body down without the blue light disruption of screens. For recovery and muscle use, sessions directly before or after exercise produce the strongest results. The most important thing is choosing a time you can stick to consistently.

Yes — bare skin gives the best results. Clothing blocks light penetration significantly, even thin fabrics. For skin treatments, clean bare skin with no thick creams or SPF applied beforehand — some ingredients can absorb or reflect the light. Light moisturiser is fine. For body treatments through clothing, you will still receive some near-infrared benefit as 850nm penetrates deeper, but results will be reduced compared to direct skin exposure.

Yes — facial treatment is one of the most popular use cases. Always keep your eyes closed or wear the protective eyewear included with your panel. 660nm red light is particularly effective for facial skin rejuvenation, collagen stimulation, reducing redness, and improving overall skin tone. Start with 5 minutes and build up to 10 minutes over the first two weeks. Remove contact lenses before facial sessions.

Recovery benefits — reduced soreness, improved sleep, better energy — are often felt within the first week. Skin improvements typically become noticeable within 2–4 weeks of consistent daily use. Fine lines, texture, and tone improvements compound over 8–12 weeks. Hair density improvements take the longest — studies show meaningful results at 16–24 weeks. The key in every case is daily consistency. Results from occasional use are significantly slower.

Some results — particularly collagen improvements and tissue repair — have lasting effects because they represent genuine structural changes in the body. However most benefits are maintained best with continued use. Think of it like exercise — the results are real while you're doing it, and some adaptations persist, but stopping entirely will gradually reduce the benefit over weeks and months. Most long-term users settle into a maintenance routine of 4–5 sessions per week once they've reached their desired baseline.

The critical difference is irradiance. Budget panels often advertise impressive LED counts but deliver 40–80 mW/cm² in practice — below the threshold where studies consistently show meaningful cellular response. Spare Sun delivers over 170 mW/cm² at 6 inches, with 300 flicker-free LEDs, zero EMF, and a 100,000-hour lifespan rated for 27 years of daily use. You're not paying for a brand name — you're paying for a panel that delivers the light energy your cells actually need.

Yes. Red light therapy is non-ionising, UV-free, and has an extensive safety record built over decades of clinical use. The Spare Sun panel emits zero EMF at treatment distance and zero UV at all distances. There is no burning, no radiation exposure, and no known side effects at recommended session lengths. It is safe for all skin tones. Certain groups should consult a doctor before use — see our Health & Safety page for the full list.

Yes — daily use is not only safe but recommended for optimal results. The cellular response to red light therapy is cumulative, meaning consistent daily use produces compounding benefits over time. There is no evidence of harm from daily use at recommended session lengths of 10–20 minutes. Some users prefer to take one rest day per week which is perfectly fine, but daily use is the protocol used in most clinical studies showing the strongest results.

EMF stands for electromagnetic field — a form of radiation emitted by many electrical devices. While the scientific consensus is that EMF at levels emitted by consumer electronics is not harmful, many health-conscious consumers prefer to minimise exposure, particularly during extended daily routines. The Spare Sun panel measures zero EMF at the recommended treatment distance of 3 inches and above — meaning you receive the full therapeutic light benefit with no measurable electromagnetic field exposure during your session.

We offer a 30-day money-back guarantee. If you use the panel consistently and don't see or feel a meaningful difference within 30 days, contact us at info@sparesun.com for a full refund. The product does not need to be unused — we expect you to have tried it. Return shipping is at the customer's cost. See our full Refund Policy for complete details.

We currently ship to the UK only. Orders are dispatched within 1–2 working days and delivered within 3–5 working days via tracked courier. You'll receive a tracking link by email once your order is on its way. Delivery is free on all orders. See our Shipping Information page for full details.

Every Spare Sun order includes the panel, power cable, hanging kit, protective eyewear, and a user guide. Everything you need to start your first session is included — no additional purchases required.

The Spare Sun panel comes with a 2-year manufacturer's warranty covering defects in materials and workmanship. If your panel develops a fault within the warranty period, contact us at info@sparesun.com and we will arrange a free replacement. We cover all shipping costs for warranty claims.