Red light therapy is safe and effective, but for the best results you need a balanced approach.
Overdoing sessions can lead to irritation, so understanding the right frequency and timing is key—especially for at-home treatments.
We’ll break down how to safely use red light therapy, avoid common pitfalls, and make the most of your routine for long-lasting benefits.
Key Notes
- Red light therapy is safe, but overuse can lead to redness or reduced effectiveness.
- Spacing sessions 72 hours apart optimizes skin benefits without irritation.
- More frequent sessions don’t speed results; consistency and timing are key.
- Overuse effects include redness, swelling, or burns from excess heat exposure.
How Much Red Light Therapy Is Too Much?
Because red light is not dangerous like UV light, there is no hard-and-fast rule about how much red light therapy is too much, and what counts as overdoing it.
Overusing red light therapy won’t damage your skin, but it could have less of a positive effect on your skin if used too often.
The benefits of red light therapy come from the specific wavelengths of light stimulating cellular activity when they penetrate your skin, and it takes time for this biological process to work.
Spacing your sessions by 72 hours instead of doing them daily will give your skin time to respond to the light rays. If you miss a session or are in a rush, don’t worry about cramming a week of treatment into a longer session—it won’t help your skin.
This 72-hour rule can vary based on your skin condition and the device being used. If you’re seeing your dermatologist in their clinic for your sessions, follow the frequency they suggest. If you’re using an at-home device, follow the instructions for that device.
Why More Red Light Therapy Isn’t Necessarily Better
LED light therapy is congruent with the dose-response relationship of the Arndt-Schulz law, which states that lower concentrations have a stronger biological effect than higher ones.
Think of a bell curve: too little energy and you won’t get a response. As you increase energy, your body will respond more until you hit a certain threshold. From there, more energy causes the response to go back down.
So, more red light therapy may not be best for you.
Studies have observed a biphasic dose response in LED light therapy, where lower doses have a better effect on stimulating and repairing tissues than higher levels.
In red light therapy, this is because the reactive oxygen species are helpful at low levels but damaging at high levels.
Red light therapy treatments consider factors like wavelength, body area covered, duration, and frequency. These parameters need to fall onto the curve so that you’re provided with the optimal result.
So, the amount of red light needed for optimal results will vary based on what device you use, as in-clinic treatments will be different from at-home use.
Potential Effects of Overusing Red Light Therapy
Overuse of red light therapy by not spacing out treatments or getting too close to the bulbs can lead to the following outcomes.
These outcomes could also be signs that you’re overdoing it and need to rethink your current routine.
Not Seeing Results
The main effect of using red light therapy too much is that you won’t see results.
If you’re not seeing results, your first thought might be to double down and increase the frequency and length of your treatments, but you should instead focus on spacing them out by 72 hours and having them consistently.
Your Skin Becomes Red or Swollen
Using red light therapy too frequently can lead to skin irritation and redness. Studies have shown that some patients using red light therapy may experience redness (erythema) or swelling after a treatment (edema), although these disappeared within 1 hour and 24 hours, respectively.
If you’re using red light therapy daily without allowing your skin time between treatments, the irritation may not get a chance to go away and will continue to be irritated.
You Get Burns or Blisters
Some effects from overusing red light therapy may come from your device rather than the light itself. For example, heat from the bulbs being too close to your skin could cause burns or blisters if you use it for too long.
How Long Does It Take to See Results from Red Light Therapy?
For most conditions, it can take a month or more to see results.
Full results can appear after one to three months of safe, regular use. If you use the recommendation of 10- to 15-minute sessions two to three times a week, you should similarly see results.
Just because the results don’t become visible automatically doesn’t mean the treatment is working less effectively.
Stick to your routine of treatment sessions for one to three months, and reassess afterward if results still aren’t showing.
Who Shouldn’t Use Red Light Therapy?
Even one session of red light therapy can be too much if you’re not a candidate for this kind of treatment.
If any of the following apply to you, you should not use red light therapy treatment:
- You take drugs that cause a sensitivity to light such as isotretinoin (often branded as Accutane) or antibiotics
- You have had cosmetic surgery or skin-related procedures in the last two months or less.
- You have a weakened immune system.
You should also ask your doctor if any of the following apply to you, as these could affect how the light interacts with your skin:
- You’re undergoing treatment for any medical condition.
- You have suspicious or cancerous lesions.
- You have a serious disease or a thyroid-related condition.
Talk to your healthcare provider or dermatologist if you experience any irritation that does not go away or if you are concerned about changes you see in your skin after using LED light therapy treatment.
How to Avoid Overdoing Red Light Therapy
Here are some good ways you can avoid overdoing low-level laser therapy and hurting your skin health.
1. Start Slow and Test Your Device
Some people have more sensitive skin than others, so if you decide to use an at-home device, start slowly so you can gauge your skin’s reaction to the treatment.
If you build up slowly, you’ll have a lower risk of overdoing things and hurting your skin right from the start.
It might even be a good idea to test the device on your skin for a few minutes and wait 24 hours to ensure that there are no skin issues.
2. Set a Timer
Set a timer on your phone every time you undergo treatment. This way, you can make sure that you don’t overdo it and undergo treatment for too long.
This is especially helpful as many LED light devices can be used when you’re lying down or relaxing, meaning you could easily fall asleep during your session.
3. Be Consistent and Track Your Progress
Red light therapy is not an overnight fix, so you’ll need at least one to three months of consistent use to see results.
Using a calendar or app to log your treatments can help you stay on track and keep you from accidentally doing too many.
You could also take photos of your skin to document your wellness journey and monitor any changes or improvements you might see.
4. Use a Quality Device and Read the Instructions
Some red light therapy devices have better quality and more safety features than others.
You should always choose a device that has been FDA-cleared, meaning it has undergone rigorous testing. Safety features like goggles to protect your eyes from the light are also key.
Different devices have different settings that will affect how close you should be to the light-emitting diode (LED) bulbs.
Make sure you read the manufacturer’s instructions carefully, so you don’t stray too close to the light and burn yourself.
5. Build a Routine Around Red Light Therapy
By integrating red light therapy sessions into your skincare routine, you will find it much easier to keep track of.
Some treatments in skincare routines can also boost the health benefits of red light therapy, helping you get rid of acne-causing bacteria and stimulating hair growth.
You can use your routine to prepare and nourish your skin before treatment. Cleanse your skin of all oil, dirt, and makeup, and moisturize after treatment for some extra rejuvenation.
Cosmetic products that include green tea, vitamin C, and collagen peptides will help boost the effects of light therapy. In particular, increased collagen production through green tea will get rid of those fine lines and leave you with an anti-aging effect.
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Frequently Asked Questions
Can red light therapy be combined with other skincare treatments?
Yes, red light therapy can be safely combined with most skincare treatments, like serums and moisturizers, after each session. However, avoid retinoids or photosensitizing agents immediately before treatment to prevent irritation.
Is there a best time of day to do red light therapy?
There’s no specific time required, but many find evening sessions ideal as they can reduce inflammation and promote skin repair overnight.
How close should the device be to my skin during treatment?
Generally, keeping the device about 6–12 inches from your skin is safe. For face masks, they’re designed to sit directly on the skin, so check your device’s recommendations for the optimal distance.
Does red light therapy make skin sensitive to sunlight?
No, red light therapy does not increase sun sensitivity like some other treatments. However, daily SPF use is always recommended for healthy skin protection.
What should I do if I accidentally overuse red light therapy?
If you experience any redness or irritation, pause sessions for a few days to allow your skin to recover, and then resume following the recommended schedule. Moisturizing can also help soothe the skin in case of mild irritation.
Conclusion
Red light therapy is a powerful tool for skin rejuvenation and healing, but balance is key.
By sticking to recommended session lengths and frequencies, you can enjoy the benefits without risking irritation or diminishing results.
The Lumi Visage LED Face Mask is designed with safety and effectiveness in mind—FDA-cleared with built-in timers and eye protection to help you get the most out of each session. Ready for a safe, professional-grade treatment from home? Try the Lumi Visage 7-Color LED Face Mask today and start your journey to healthier, smoother skin.
