Does red light therapy really work for hair loss?
So what are the effects of red light therapy, and how does it work for hair thinning and hair loss? “LED (light-emitting diode) therapy, particularly in the form of low-level light therapy (LLLT), has been studied for its potential benefits in promoting hair growth,” begins Dr. Raj. “This therapy is thought to stimulate hair follicles, increase blood circulation in the scalp, and enhance cellular metabolism, which can lead to improved hair density and thickness.”
He explains that “studies have shown positive results for individuals with androgenetic alopecia (male or female pattern baldness) and other types of hair loss.”
From a trichologist POV, Kingsley explains that, “there is limited evidence into the guaranteed results of using LED, although there is no harm in trialing this option” as a part of your hair loss/growth journey if you so choose. She echoes the idea that devices using low-level laser therapy (LLLT) [also known as photobiomodulation] have more backing in terms of studies, but that any device is best used in tandem with other hair loss solutions, such as minoxidil “to gain the maximum benefit.” This way, your hair regrowth journey for thicker hair will not rely on just one thing – it will be part of a full treatment plan.
What kind of LED devices are best for scalp?
“There are many available on the market, from caps, helmets to combs,” says Dr Raj, who believes the best are “ergonomic, easy to use devices that can be used in smaller areas more consistently.”
As you’ll see, many brands offer solutions, ranging from caps you wear on your head, to small handheld devices you massage your scalp with. The latter can help to stimulate circulation at the scalp where hair grows, and can sometimes be used alongside scalp scrubs or oils, making them potentially doubly as effective.
But it’s really down to preference and budget in terms of which hair loss treatment is best for you. LED devices just offer a great non-invasive treatment option, no matter which you choose.
Is red light therapy for hair loss safe?
Experts I quizzed agreed that genuine, high quality devices (such as the ones in this piece) are safe and you should not experience unwanted side effects, but you must always follow the specific product’s instructions.
In terms of how often you should use your device, Newman explains that “regular usage is key to seeing results, and frequency typically depends on the device type and treatment goals. For example, many LED devices are designed for daily or every-other-day use for 10–20 minutes per session, though specific guidance will depend on the model.” He adds: “Consistent use is critical to achieving and maintaining the desired effects, whether for skin improvement or scalp treatments.”
Ferguson and Measures recommend that for their The Light Salon device, you should use it “three to five times a week.” They conclude: Used this often, the number of treatments amounts to 240 a year, making an LED an amazing investment.” I approve of this girl math for healthy hair.
How often can you use red light therapy on hair?
This is very dependent on your particular device, but in general, “consistency is vital across all home use tech and none more so than with hair growth,” according to Newman, who adds that the CurrentBody Helmet, for example, should be used daily.
The FAQ 301 device however, is best used on alternate days, says Dr Raj. “Red light therapy can generally be used several times a week, with many recommendations suggesting three to five sessions per week for optimal results.” She adds: “If using an LED device for hair growth, it is essential to follow the guidance of a healthcare professional or specific product instructions for best practices.”
How long does it take to see hair growth with red light therapy?
Unfortunately, there is no solid answer to this – due to varying factors. “Hair type, the level of hair loss and hair density will all contribute to how quickly you see results,” explains Newman. “Also, you would need to consider any other treatment therapies you are using alongside devices, such as oral minoxidil.”
“Results from red light therapy for hair growth can vary among individuals,” confirms Dr Raj, who adds: “Generally, users may begin to notice improvements within 12 to 24 weeks of consistent treatment. However, the full effects often take several months to manifest.” In other words, it’s crucial to be patient!
Are there side effects of red light therapy for hair loss?
As mentioned, this is a fairly safe avenue for hair loss and regrowth, meaning there are “minimal side effects,” says Dr Raj. “Some users may experience mild irritation, redness, or discomfort on the scalp; however, these symptoms are often temporary.” She adds that consulting with your doctor or derm is essential if persistent reactions occur.
