LED helmets, laser caps, light brushes… In recent years, photobiomodulation has emerged as the new promise for hair loss prevention.

But what do scientific publications really say? Is it a marketing gimmick or a genuine long-term treatment? Here's what you need to know before deciding.

How does light affect hair?

To understand this mechanism, we need to look at what happens at the cellular level.

The treatment is based on low-level laser therapy (LLLT). Unlike lasers used in surgery or hair removal, these devices do not heat or burn tissues.

The principle is as follows: red light penetrates the scalp skin to the base of the hair follicles. At this depth, photons are captured by a mitochondrial enzyme, cytochrome c oxidase, a key link in cellular energy production.

This absorption triggers several effects:

• Increased ATP production: more energy available for cell division and growth.
• Improved microcirculation: stimulation of micro-vessels would promote the supply of oxygen and nutrients to the roots.
• Lengthening of the anagen phase: the active hair growth phase would be prolonged, with a possible awakening effect on dormant follicles.

Our HCT80 Helmet and its clinical results (SGS Laboratory)

It is based on this scientific body of knowledge that we designed the HCT80 Helmet, an at-home LLLT device intended to address hair loss related to hormonal imbalances (androgenetic alopecia, PCOS, menopause) and telogen effluvium (stress, fatigue, seasonal changes).

To scientifically evaluate the concrete effectiveness of the HCT80 Helmet, a clinical study was specifically conducted on our device by SGS Laboratory, a global leader in industrial testing and certification.

HCT80 Helmet Study Protocol and Results (140 days)

The study followed 10 participants (9 women, 1 man, aged 30 to 59) for 140 days (approximately 5 months), with 20 minutes of use every other day, without any other associated hair treatment.

Evaluated at the end of the protocol by an independent dermatologist, the study showed:

• +10% hair density (measured increase in hair count / cm^2);
• +11% hair in anagen phase (increase in the proportion of hair in active growth);
• 100% clinical improvement validated by the independent dermatologist;
• First visible results recorded as early as 8 weeks of treatment;
• A reduction in hair loss and strengthening of the hair fiber, associated with collagen stimulation.

Why not all devices are created equal

Research validates the tool, but within a precise framework. Many entry-level devices disappoint because they use simple, low-power LEDs, without real light coherence. Two criteria are decisive:

1. Wavelength

The therapeutic efficacy window generally cited in the literature is around 650 nm. This is the wavelength chosen for the 80 laser diodes of the HCT80 Helmet, selected to allow photons to pass through the skin barrier homogeneously to the hair bulb, rather than dispersing on the surface.

2. The state of the treated follicle

Photobiomodulation stimulates weakened or slowed follicles, but cannot regrow a follicle that has been completely inactive for many years. It is a preventive and re-densifying treatment, particularly relevant at the first signs of thinning, not a solution for long-established baldness.

Scientific literature and laboratory measurements support the use of low-level laser therapy as a serious option against hair loss, with a good safety profile. The HCT80 Helmet aims to make this technology accessible at home, with a simple protocol (20 minutes, every other day). It is not an instant miracle solution, but a long-term treatment that requires regularity, with effects generally observed after several months of use.