Thinking of trying Red Light Therapy at Home? Hold that glow! Not everyone should hop under Red Light Therapy Panels or chill in Red Light Therapy Beds. Short answer: It’s not safe for everyone. Keep reading to find out who should skip it—and why your skin isn’t always the boss.
What is Red Light Therapy?
Red Light Therapy (RLT) is a treatment that uses low-level wavelengths of red or near-infrared light to target cells in the body.
It’s increasingly popular for skin rejuvenation, muscle recovery, and more. Many people now enjoy the convenience of Red Light Therapy at Home, using personal panels or full-body beds.
How RLT Works (Photobiomodulation)
RLT works through photobiomodulation, where red and near-infrared light stimulate the mitochondria in your cells.
This improves energy production (ATP), supports healing, and reduces inflammation. The process is gentle, non-invasive, and doesn’t heat the body like UV tanning beds.
Common Uses and Benefits of RLT (e.g., skin health, pain relief, hair growth)
People use RLT for a wide range of reasons:
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Skin Health: Helps with acne, fine lines, and collagen production.
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Pain Relief: Soothes joint pain, muscle soreness, and inflammation.
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Hair Growth: Used for pattern baldness and thinning hair.
Other benefits include improved mood, wound healing, and reduced signs of ageing.
Is Red Light Therapy Generally Safe?
FDA Clearance and Safety Profile
Many devices, especially those used in clinics, are FDA-cleared (or UK MHRA registered), and are considered safe for general use.
At-home red light therapy panels are often lower in intensity, which further reduces risks.
Short-Term vs. Long-Term Safety
Short-term use rarely causes issues when instructions are followed.
However, long-term safety studies are still emerging. Caution is advised for those with medical conditions or taking medications.
Key Contraindications: Who Should Avoid Red Light Therapy?
Individuals with Cancer or a History of Cancer
Active Skin Cancer or Suspicious Lesions
Avoid RLT if you have undiagnosed skin lesions, melanoma, or non-melanoma skin cancers. The stimulating effect of light may be risky on abnormal cells.
Individuals Undergoing Cancer Treatment (Chemotherapy, Radiation)
Those undergoing chemotherapy or radiation should not use RLT without medical clearance.
It may interfere with treatment or immune function during this vulnerable period.
Potential for Tumour Stimulation (Preclinical Studies)
Animal studies suggest red light could theoretically stimulate tumour growth, though human evidence is limited.
Still, it's wise to err on the side of caution.
People with Photosensitive Conditions
Autoimmune Diseases (e.g., Lupus Erythematosus)
Conditions like lupus are highly photosensitive.
Red light could trigger flare-ups, skin rashes, or worsening of symptoms.
Genetic Conditions (e.g., Porphyria)
Genetic disorders such as porphyria involve extreme sensitivity to light.
Exposure may cause pain, swelling, or blisters.
How Photosensitivity Interacts with RLT
Photosensitive individuals may experience skin irritation, headaches, or burning sensations even at low light levels.
A doctor’s clearance is essential.
Those Taking Photosensitising Medications
Common Medications to Be Aware Of
Certain medications increase light sensitivity, such as:
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Tetracyclines (e.g., doxycycline)
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Retinoids (e.g., tretinoin)
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Lithium
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Some antibiotics and diuretics
These can amplify skin reactions, headaches, or visual discomfort.
Importance of Consulting Your Doctor
Before using red light therapy panels or beds, speak to your GP or pharmacist if you’re on any medication.
Even some over-the-counter drugs or supplements may cause photosensitivity.
Pregnancy and Breastfeeding
Lack of Sufficient Long-Term Safety Data
There's currently limited data on RLT during pregnancy or breastfeeding.
No long-term studies confirm it's safe for mum or baby.
Potential Risks During Pregnancy (e.g., skin sensitivity, fetal impact)
Pregnant women often have increased skin sensitivity.
Direct light on the abdomen or chest could cause discomfort—or unknown effects on the foetus.
Doctor's Recommendations
Always check with your midwife or doctor before starting RLT while pregnant or breastfeeding.
Other Medical Conditions and Situations
Open Wounds, Infections, or Skin Lesions
Do not apply RLT directly over infected areas, open wounds, or sores, unless under supervision.
It could worsen inflammation or delay healing if misused.
Eye Conditions or Vision Problems (importance of eye protection)
Eye protection is non-negotiable. Direct exposure may cause eye strain or long-term damage.
Especially avoid if you’ve had eye surgery or vision complications.
Hyperthyroidism (when applied to neck/upper chest)
RLT should be avoided near the thyroid in individuals with hyperthyroidism.
Stimulating this area could affect hormone levels.
Epilepsy or Light-Induced Headaches
Flashing or bright light can trigger seizures or migraines.
Use caution or avoid entirely if prone to photosensitive epilepsy.
Recent Burns or Cuts
Allow burns or fresh cuts to heal before applying RLT.
Exposing compromised skin can increase irritation or delay recovery.
Implants or Medical Devices (consultation recommended)
Those with pacemakers, neurostimulators, or implants should speak to a medical professional first.
The light may interact with device function.
Fever or Active Infection
Avoid RLT when you have a fever, flu, or active viral/bacterial infection.
It may raise internal temperature slightly, which could worsen symptoms.
Use in Conjunction with Steroids
Steroid medications can make skin fragile and more sensitive to light.
Wait until the course finishes, or consult your GP.
Tattoos (potential for fading or uneven absorption)
RLT may cause fading, patchiness, or altered pigmentation in tattooed skin.
Limit exposure or cover the area when using light devices.
Recent Facial Fillers or Botox Injections
Avoid RLT for at least 48–72 hours after injectable treatments.
Light may influence absorption, swelling, or outcomes.
Post-LASIK Eye Surgery Healing Period
Avoid RLT around the eyes for at least 2–4 weeks post-surgery.
Healing corneas may be sensitive to light.
Potential Side Effects and Precautions
Common, Mild Side Effects
Headaches
Overexposure or not using eye protection may cause light-induced headaches.
Reduce session time or brightness if this occurs.
Eye Strain
Bright panels close to the face can cause eye fatigue.
Take breaks and always wear protective goggles.
Skin Irritation (redness, itching, temporary rash)
Mild redness or itchiness is common at first.
Lower frequency or move the device further away if it persists.
Insomnia (if used at certain times)
Using RLT too late in the evening may disrupt sleep by stimulating alertness.
Stick to morning or early afternoon sessions.
Important Safety Precautions for All Users
Always Wear Eye Protection
Even if targeting other body parts, always use safety goggles or blackout glasses.
Perform a Light Sensitivity Test
Start with short sessions at lower intensity.
Monitor how your skin and body respond before increasing exposure.
Follow Device Guidelines and Recommended Session Durations
Don’t exceed manufacturer instructions.
More isn’t always better—and overuse may trigger side effects.
Consult a Healthcare Professional Before Use
Especially if you have medical conditions, take meds, or are unsure about RLT’s suitability.
Hydration and Avoiding Overheating
Drink water before and after sessions.
Take breaks between treatments to avoid overheating or fatigue.
Consulting a Healthcare Professional
Why Medical Consultation is Crucial
Even though Red Light Therapy at Home feels low-risk, underlying conditions or medications could make it unsafe.
Professional advice reduces this risk.
Personalised Advice Based on Your Health History
Your doctor can help identify if RLT suits you based on past or current conditions.
Ensuring RLT is Safe and Appropriate for You
Health professionals assess both general health and targeted treatment areas.
Discussing Potential Interactions with Medications or Existing Conditions
Some medications and illnesses don’t mix well with red light.
Let your doctor review all possible conflicts.
Takeaways
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Red Light Therapy is powerful—but not one-size-fits-all.
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People with certain conditions, medications, or sensitivities should avoid it.
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Red Light Therapy Panels and Beds can be safe—with caution.
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Always use eye protection, follow usage guidelines, and talk to your doctor.
