Is GLO24K Red Light Safe for Your Skin?

I’ve been testing skincare devices for almost 8 years now, and let me tell you – the world of at-home treatments has come a loooong way. When I first got my hands on the GLO24K red light therapy mask last spring, I was both excited and skeptical. Could this futuristic-looking LED mask actually deliver professional-grade results? And more importantly, was it actually safe to use at home?

After months of personal testing and deep research into the science behind it, I’m ready to share my honest thoughts about whether the GLO24K red light therapy is safe for your skin. Spoiler alert: the answer isn’t a simple yes or no.

What Exactly Is GLO24K Red Light Therapy?

GLO24K red light therapy uses specific wavelengths of red LED light that penetrate your skin at varying depths. The primary wavelength used in their devices ranges between 630-700 nanometers, which is considered the therapeutic sweet spot for skin treatments.

I remember the first time I strapped that GLO24K LED mask to my face – I felt like I was in some sci-fi movie! But behind the futuristic appearance is some pretty solid science. The technology works by delivering low-level wavelengths of red light to your skin cells’ mitochondria (the power generators of your cells), which then create energy that kick-starts various healing and rejuvenating processes.

Unlike harmful UV rays from the sun or tanning beds, red light therapy doesn’t burn or damage your skin. Instead, it stimulates natural processes like collagen production and increased circulation.

The Science Behind Red Light Safety

When I first started researching red light therapy, I was honestly concerned about putting any kind of light directly onto my face for extended periods. So I dug into the research, and here’s what I found:

Red light therapy has been studied pretty extensively since the 1990s. NASA originally developed it to help grow plants in space (cool, right?), but researchers quickly discovered its benefits for human tissue healing.

Studies have shown that specific wavelengths of red light are generally safe when used as directed. The key factors that determine safety include:

  1. Wavelength (630-700nm is considered safe)
  2. Power density (how intense the light is)
  3. Treatment duration
  4. Frequency of use

The GLO24K devices operate within these safe parameters, which definitely gave me peace of mind. But remember – even water can be dangerous if you consume too much at once! The same principle applies here.

GLO24K Red Light Beauty Device for Face and Neck.
$89.65 $68.00


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04/27/2025 02:59 am GMT

Potential Side Effects of Red Light Therapy

Let’s be real for a second — no treatment is completely without risk. While red light therapy is generally considered safe, some users (myself included) have experienced mild side effects:

Temporary Visual Sensitivity

After my first 20-minute session with the GLO24K mask, I noticed slight sensitivity to bright light for about 30 minutes afterward. This is pretty normal and why the company recommends wearing the included eye protection during treatments. I’ve found that closing my eyes during treatment works fine too, but the goggles definitely help if you’re sensitive to light.

Mild Redness or Warmth

Sometimes my skin looks a bit flushed after a session – almost like I just did a light workout. The device does generate a gentle warmth, which most people find pleasant. In my experience, any redness dissipates within an hour.

Headaches (Rare)

I’ve never experienced this personally, but a few of my readers have reported mild headaches after their first few sessions. These typically resolve once your body adjusts to the treatment.

It’s worth noting that these side effects are generally mild and temporary. They’re not the same as the skin damage you might get from other types of light treatments like UV therapy.

Comparing Red Light vs. Blue Light Therapy

One question I get all the time is: “What’s the difference between red and blue light therapy, and which is safer?”

From my testing of both technologies, here’s the simple breakdown:

Red light penetrates deeper into the skin and primarily targets anti-aging concerns like wrinkles, fine lines, and overall skin texture. It also helps with inflammation and healing.

Blue light, on the other hand, stays more on the surface and works primarily to kill acne-causing bacteria. It’s great for oily and acne-prone skin but doesn’t have the same collagen-boosting benefits.

In terms of safety, both are generally considered safe when used correctly, but they target different concerns. Some devices (including certain GLO24K models) offer both red and blue light options so you can target multiple skin issues.

How to Use a Red Light Therapy Mask Safely

After using my GLO24K mask for several months, I’ve developed a routine that I believe maximizes benefits while ensuring safety:

  1. Always start with a clean face – I double cleanse to make sure there’s no residue that could affect light penetration
  2. Begin with shorter sessions (5-10 minutes) and gradually work up to the recommended time
  3. Use eye protection if your eyes are sensitive to light
  4. Stay consistent but don’t overdo it – I stick to 3-4 sessions per week
  5. If you experience any unusual reactions, take a break for a few days

Remember that more isn’t always better with red light therapy. Stick to the recommended session length (usually 10-20 minutes for GLO24K devices) and frequency.

My Personal Results with GLO24K Red Light

So after all this talk about safety, you’re probably wondering – does it actually work?

I’ve been using the GLO24K mask consistently for about 7 months now, and I’ve definitely noticed some changes in my skin. The most obvious improvement has been in overall texture and firmness. The fine lines around my eyes (which started appearing after my 35th birthday – ugh) seem less pronounced.

What surprised me most was how quickly I noticed improved healing after a particularly bad breakout last summer. The red light seemed to calm the inflammation and speed recovery significantly.

But — and this is important — the results weren’t overnight. I started noticing subtle improvements around the 4-week mark, with more significant changes after about 3 months of consistent use.

FDA Cleared Red Light Therapy Devices

One thing that gave me confidence in trying GLO24K was checking its FDA status. Many of their devices are FDA-cleared, which doesn’t mean the FDA has approved them as medical treatments but rather that the agency has determined they’re similar to other legally marketed devices and are safe for consumer use.

This isn’t the same as FDA approval (which involves a more rigorous process), but FDA clearance does provide a basic level of confidence that the device meets certain safety standards.

When shopping for any red light therapy device, I always recommend checking for FDA clearance at minimum. It’s one extra layer of confidence in the product’s safety profile.

The Bottom Line: Is GLO24K Red Light Safe?

Based on my personal experience and research, I believe GLO24K red light therapy is generally safe for most people when used as directed. The technology has been studied for decades, and the risks are minimal compared to many other skincare treatments.

That said, there are a few groups who should approach with caution or avoid it altogether:

  • People with certain photosensitizing medical conditions
  • Those taking medications that increase light sensitivity
  • Anyone with active skin cancer
  • Pregnant women (simply due to lack of research in this population)

If you fall into any of these categories, please talk to your dermatologist before trying red light therapy.

For everyone else, GLO24K offers a relatively safe option for addressing various skin concerns without the downtime or risks associated with more invasive procedures.

GLO24K Red Light Beauty Device for Face and Neck.
$89.65 $68.00


Buy Now
We earn a commission if you make a purchase, at no additional cost to you.
04/27/2025 02:59 am GMT

As with any skincare treatment, the key is moderation and following the directions. Start slow, stay consistent, and monitor how your skin responds. Everyone’s skin is different, and what works amazingly for one person might be just okay for another.

Have you tried red light therapy? I’d love to hear about your experiences in the comments below!

Disclosure: This post contains affiliate links. If you make a purchase through these links, I may earn a small commission at no extra cost to you.

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