Red light therapy is becoming increasingly popular as a natural way to stimulate hair growth. This treatment uses red and infrared light to activate hair follicles. Especially in the early stages of hair loss, red light therapy for hair growth can make a noticeable difference.
Note: The content below is not intended as medical advice. It is based on our own knowledge, user experiences, and various online sources. Always consult your medical specialist in case of scalp or skin concerns.
Table of contents
- Benefits of red light therapy for hair growth
- For a healthier scalp
- How red light therapy works against hair loss
- How to use it for hair growth
- Additional treatment options for hair loss
- Frequently asked questions
Benefits of red light therapy for hair growth
Red light therapy hair growth is not just a trend, but a method backed by science. Research shows that red light therapy stimulates cellular activity in hair follicles, which may lead to stronger and thicker hair. Here are some of the key benefits:
- Stimulates hair follicles: Light waves around 670 nm boost cellular energy production, supporting hair growth.
- Helps reduce hair loss: Often used for conditions like androgenetic alopecia.
- Improves blood flow to the scalp: Increased circulation provides more nutrients to hair roots.
- Suitable for sensitive scalps: The treatment is non-invasive and painless, making it safe for daily use—even on sensitive skin.
Research shows convincing results
In women with hormonal hair loss, treatment with red light therapy every other day led to a hair growth increase of up to 51%.
In another study involving 41 men, the group treated with red light therapy developed significantly more hair follicles than the untreated control group.
A 2014 study showed that women using this therapy saw an average increase of 37% in hair growth, without side effects.
Additional sources:
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8906269/
- https://med.stanford.edu/news/insights/2025/02/red-light-therapy-skin-hair-medical-clinics.html
- https://pubmed.ncbi.nlm.nih.gov/24727445/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8577899/
For a healthier scalp
A healthy scalp is essential for proper hair growth. Red light therapy helps improve the overall balance of the skin. This includes:
- Enhancing skin balance and cell renewal
- Boosting circulation, helping remove waste products
- Reducing tension, itching or irritation on the scalp
- Creating an optimal environment for hair to grow
How red light therapy works against hair loss
The effectiveness of red light therapy depends on the light wavelength. Red light around 670 nanometres has proven to be most effective against hair loss.
At this wavelength, red light penetrates deep into the dermis layer of the skin. It stimulates hair follicles, the hair matrix, hair papillae, and surrounding blood vessels. This activates cell metabolism and improves blood flow, contributing to healthier and stronger hair growth.
If you're wondering, "does red light therapy help hair growth?", multiple studies confirm these underlying biological effects.
How to use it for hair growth
To achieve the best results, it’s important to use red light therapy correctly. Usage tips:
- Frequency: 3 to 7 times per week
- Distance: Hold the device 15 to 30 cm from the scalp
- Duration: 10 to 15 minutes per session
Additional treatment options for hair loss
In addition to red light therapy, other methods can support your hair growth goals. For best results, consider combining treatments such as:
- Scalp massage: Improves blood flow to the scalp
- Caffeine products: Shampoos or serums with caffeine may strengthen hair roots
- Healthy nutrition and supplements: Biotin, iron and zinc can support hair health
- Stress reduction: Stress can negatively impact hair growth
Frequently Asked Questions
Is red light therapy safe for daily use?
Yes, the therapy is safe and painless. Daily use is even recommended in cases of severe hair loss.
How long before I see results?
Most people start seeing results between 8 and 16 weeks. This can vary per individual.
Does red light therapy help all types of hair loss?
It’s especially effective for early-stage hair loss, androgenetic alopecia and diffuse thinning. It’s less effective for scarring-related hair loss.
Can I combine red light therapy with other hair products?
Yes, it’s safe to combine with shampoos, serums or supplements. In fact, this often enhances the effect.
