Flavio Lucariello - June 10 2025
How Often Should You Use Red Light Therapy for Hair Growth?
Red Light Therapy for Hair Growth: How Often Should You Use It?
If you’re exploring ways to support hair growth, chances are you’ve come across red light therapy. But how often should you use red light therapy for hair growth? And does it really work?
Red light therapy — once reserved for dermatology clinics — is now one of the most searched non-invasive home treatments for thinning hair. From stimulating follicles to improving blood flow and reducing inflammation, this light-based approach is gaining real traction in the hair wellness space. And with red light therapy at-home treatment tools like the FLO™ brush or other red light therapy devices, it's easier than ever to incorporate into your routine.
Let’s take a look at how red light works, how often you should use it, and whether it’s actually effective for hair growth or hair loss.
What is Red Light Therapy (And Why Is It More Than Just a Light)?
At a glance, it may look like just another trendy treatment. But red light therapy, also known as low-level laser therapy (LLLT), is rooted in real science. It uses specific wavelengths of red and near-infrared light to penetrate the scalp and stimulate activity in the hair follicles. This boost in energy helps increase blood circulation, reduce inflammation, and encourage follicles to stay longer in the anagen (growth) phase — which is key for fuller, healthier hair.
Does Red Light Therapy Actually Work for Hair Growth or Hair Loss?
Short answer: Yes — for many people, it does.
Studies have shown that red light therapy can increase hair density, strengthen existing strands, and help prevent further thinning — especially in cases of androgenetic alopecia and diffuse thinning. It helps follicles recover and perform better, offering a non-invasive way to tackle hair loss.
We break down all the clinical research, benefits, and what to expect in our ultimate guide to red light therapy for hair growth — definitely worth checking out if you want to go deeper.
How Often Should You Use Red Light Therapy for Hair Growth?
Experts and clinical studies generally recommend using red light therapy 3 to 4 times per week for best results — especially during the first 3 to 4 months of treatment. Each session should last around 10 to 15 minutes, depending on the device.
This frequency gives the hair follicles enough consistent stimulation to respond, without overexposing the skin. Red light therapy is known to be non-invasive and safe, but overdoing it won’t necessarily accelerate results — think consistency, not intensity.
That said, some modern tools offer more efficient delivery of red light, allowing for shorter daily sessions that still yield results — which brings us to FLO™brush.
How Long Does Red Light Therapy Take to See Results for Hair Growth?
Seeing results with red light therapy is closely tied to the natural hair growth cycle. Hair typically grows at a rate of about 1 to 1.5 centimeters per month, but this can vary based on age, genetics, and overall health. For many people, early signs of improvement — like thicker or healthier-looking hair — may appear within 8 to 12 weeks of consistent use. However, because hair grows in cycles, it can take up to 6–10 months for new “baby hairs” to fully mature and become thicker and darker.
It’s also important to note that red light therapy works best on active hair follicles. If a follicle has completely died, it can’t be revived. But for follicles that are dormant or struggling, consistent red light therapy can help boost activity and encourage stronger, healthier regrowth over time.
Factors to Consider for Frequency and Choosing the Right Red Light Therapy Device
When deciding how often to use red light therapy and what device to choose, a few key factors come into play:
- Your Hair Type and Length:
If you have long or thick hair, traditional red light therapy devices like helmets or caps might not deliver light evenly to the scalp. Hair can block the light, reducing effectiveness. A device like a brush, with bristles that displace hair and allow the light to reach the scalp, can offer better coverage and results. - Device Design and Features:
There are various types of red light therapy devices out there, from bulky panels to helmets and caps. Panels can be effective but often require 20-minute sessions, which can be time-consuming and less convenient. Helmets and caps can be expensive and, like panels, typically use only red light. - Beyond Red Light:
Many red light therapy tools focus only on light, missing other key elements of scalp health. A more advanced approach combines red light with microcurrent and gentle massage — this multi-therapy combination can stimulate blood flow, relax the scalp, and create a healthier environment for hair growth. This is exactly what sets FLO™ apart.
FLO™: A Smarter Red Light Therapy Brush for Hair Growth
Most people think of red light therapy as a bulky helmet or a standing panel. But with FLO™, red light therapy comes in a compact, easy-to-use brush device that brings clinical-grade hair stimulation right to your bathroom shelf.
It’s not just a red light therapy brush — it’s a complete scalp revitalization system. At its core is red light therapy, delivering all the proven benefits directly to your scalp. But FLO™ goes even further by combining red light with microcurrent stimulation and a gentle vibrating massage.
This multi-layered approach helps revive the scalp, reduce inflammation, and boost blood circulation — all while supporting healthy hair growth by stimulating and strengthening dormant follicles.
And the best part? It only takes 5 minutes a day.
Instead of scheduling long treatment sessions several times a week, FLO™ makes it easy to integrate red light therapy into your daily routine — consistently and effectively.
Want to know more? Try FLO™ risk-free and experience it for yourself.
