A healthy scalp is the foundation for healthy hair. Gentle red and near-infrared light support circulation and a balanced scalp environment, in a hands-free routine that fits into your morning or evening.
Support a healthy scalp with red light
What research says about light, circulation and the scalp environment.
What research shows
Low-level light therapy is one of the most studied at-home approaches for scalp and hair wellness, with a growing body of controlled trials.
Why it works
Red light supports circulation, bringing oxygen and nutrients to the scalp. Many users first notice a calmer, more balanced scalp before any change in their hair.
Relevant wavelengths
660nm red works at the scalp surface; 850nm near-infrared reaches deeper. No UV, and sessions feel gentle with mild warmth at most.
Read the guide: How to Build a Routine That Actually Sticks · The Scalp Wellness Glossary
References: Jafari et al. 2024 (systematic review)
FAQ
It supports circulation and a balanced scalp environment. Many people notice their scalp feels calmer and less oily within the first few weeks, and see the benefits in their hair over the following months.
Choose a hands-free cap. The 7HW StrandAir is fully wireless with a 20-minute auto-timer, so you can wear it while you get ready or answer emails. For focused laser light as well, choose the 7HW StrandPro.
Yes. Low-level light uses no UV and sessions feel gentle. If you have an active scalp condition or take photosensitising medication, check with your doctor first.
