Japanese Head Spa: What It Really Does to Your Hair (and What It Doesn't)

But behind the zen atmosphere and the satisfying videos, there’s a real question: does it actually do anything for your hair?

The verdict, right off the bat: scalp massage has effects measured by science. But not necessarily the ones being sold to you in salons. It doesn’t regrow lost hair. It thickens it, it calms stress, it improves scalp health. Three promises, three different levels of evidence.

What happens during a head spa

The head spa comes from Japan, where it has existed since the 1990s under the name “ヘッドスパ” (pronounced “heddo soupa”, literally “head spa”). The concept consists of four steps:

• A visual diagnosis of the scalp, sometimes with a micro-camera that zooms in on your hair follicles
• A deep cleansing to remove excess sebum and residue
• A long, firm massage of the scalp, between 20 and 40 minutes
• A serum or mask applied to the scalp to nourish and soothe

The full session lasts between 30 and 60 minutes. The basic idea: a healthy scalp = healthier hair. Simple. But do the promises hold up?

The 3 promises of the head spa, put to the test

“It makes hair grow back”

This is the promise you hear most often. The one that brings people into salons. The one you read under TikTok videos with 2 million views.

What the science says

A Japanese team had the scalps of 9 men massaged for 4 minutes per day with a standardized device, for 24 weeks. Result: hair thickness went from 0.085 mm to 0.092 mm. That’s +8%. The non-massaged side of the scalp? No change. On a larger scale, a survey of 327 people practicing scalp massage for their androgenetic alopecia shows that 69% reported stabilization or improvement. The average time before seeing an effect: approximately 36 cumulative hours of massage, or 2 months at a rate of 15 to 20 minutes per day.

How it works beneath the skin

The cells at the base of the hair follicle (the dermal papilla cells, the ones that drive hair growth) respond to mechanical forces. Researchers call this mechanotransduction. When you massage your scalp, you stretch the subcutaneous tissue. The cells detect this pressure and modify their activity: activation of growth genes and a 50% reduction in an inflammatory marker. A review published in 2025 confirms that this mechanical stimulation can activate follicle stem cells. Massage isn’t just relaxing — it sends a biological signal to the roots.

The verdict

No study shows regrowth on bald areas. If your follicles have miniaturized under the effect of DHT, massage won’t reverse the process. What it actually does is thicken the remaining hair. More volume, less scalp showing through. No regrowth, but a real cosmetic benefit.

“It stops hair loss”

On Instagram, you see before/after photos with “fewer hairs on the brush” after a few head spa sessions. Can scalp massage really slow down hair loss?

What the science says

A study on 34 women measured the effect of scalp massage on stress hormones. Two sessions per week for 10 weeks. Results: cortisol dropped by 30 to 37% depending on the groups. Noradrenaline, another stress hormone, decreased by 27 to 40%.

The link to hair loss

Chronic stress is a documented trigger for telogen effluvium, that diffuse shedding that occurs 2 to 4 months after an intense episode. By lowering cortisol, scalp massage could indirectly protect the hair cycle.

The verdict

Plausible, but not directly proven. No one has yet measured the full chain — massage > cortisol drop > less hair loss — in a single study. The mechanisms make sense, but it remains conditional.

“It cleanses and rebalances the scalp”

The most understated promise. And the most solid.

What the science says

We spend fortunes on shampoos and masks for the lengths. But the scalp, where hair is born and built, gets overlooked. Yet that’s exactly where everything plays out.

Researchers have shown that scalp condition affects hair quality before it even emerges from the skin. When the environment is imbalanced (excess sebum, overgrowth of yeasts like Malassezia), it produces oxidative stress — aggressive molecules that damage the hair as it forms. Result: thinner hair, more brittle, that falls out more easily.

A telling example: a simple 1% zinc pyrithione shampoo, just by cleaning the scalp better, produced a significant increase in the number of visible hairs in 9 weeks. Comparable to minoxidil 5%. Just by taking care of the scalp.

What about essential oils?

Some salons add essential oils to the treatment. Rosemary, lavender, peppermint. For rosemary, the science backs it up: a clinical trial on 100 patients with androgenetic alopecia showed it was as effective as minoxidil 2% after 6 months. For a blend of thyme, rosemary, lavender, and cedar, a trial on 84 patients with alopecia areata reported improvement in 44% of patients versus 15% in the control group. A real added value, provided the oils are concentrated and not just there for ambiance.

The verdict

Yes, and this is probably the real strength of the head spa. Deep cleansing, removal of excess sebum, rebalancing the scalp microbiome. Not glamorous, but effective.

What the head spa cannot do

Salons won’t always tell you this, so let’s be straightforward.

Studies that are still fragile

The sample sizes are small: 9 men in the main study on thickening. The 327-person survey is self-reported, with no control group. We’re far from the thousands of patients in trials on finasteride or oral minoxidil.

One session per month is not enough

The studies that show results use daily massage for months. A salon session once a month, however pleasant it may be, doesn’t reach the threshold of mechanical stimulation needed to thicken anything.

Massage doesn’t replace a diagnosis

If the loss is hormonal — meaning linked to androgenetic alopecia (in men as well as women) — massage alone won’t be enough. The same goes for iron deficiencies, biotin deficiencies, or hormonal imbalances. Massage is a promising complement, not a first-line treatment.

Before massaging, before spending anything at a salon, the real first step is understanding why you’re losing your hair. A hair diagnosis allows you to distinguish what falls under maintenance from what requires medical care.

When you need to go further

For people in the early stages of hair loss, daily massage can be integrated into a comprehensive approach alongside validated medical treatments such as PRP, exosomes, mesotherapy, or low-level laser therapy. For areas that are already bald, hair transplantation remains the only way to restore real hair where there is none. The Sapphire FUE and DHI techniques allow for reimplanting healthy follicles harvested from the donor area.

Dr. Emrah Cinik includes a PRP treatment with every procedure and offers follow-up tailored to each patient’s profile. More than 50,000 patients over 20 years, protocols compliant with ISHRS standards. The before/after results and the month-by-month progress allow you to visualize the journey. A free consultation is the perfect opportunity to get a proper diagnosis and understand where you really stand. It’s commitment-free, and it helps you see things more clearly.

Scientific references

Koyama, T., Kobayashi, K., Hama, T., Murakami, K., & Ogawa, R. (2016). Standardized scalp massage results in increased hair thickness by inducing stretching forces to dermal papilla cells in the subcutaneous tissue. Eplasty, 16, e8. https://pmc.ncbi.nlm.nih.gov/articles/PMC4740347/

English, R. S., & Barazesh, J. M. (2019). Self-assessments of standardized scalp massages for androgenic alopecia: survey results. Dermatology and Therapy, 9(1), 169-178. https://pmc.ncbi.nlm.nih.gov/articles/PMC6380978/

Kim, I. H., Kim, T. Y., & Ko, Y. W. (2016). The effect of a scalp massage on stress hormone, blood pressure, and heart rate of healthy female. Journal of Physical Therapy Science, 28(10), 2703-2707. https://pmc.ncbi.nlm.nih.gov/articles/PMC5088109/

Trüeb, R. M., Henry, J. P., Davis, M. G., & Schwartz, J. R. (2018). Scalp condition impacts hair growth and retention via oxidative stress. International Journal of Trichology, 10(6), 262-270. https://pmc.ncbi.nlm.nih.gov/articles/PMC6369642/

Nam, S. Y., Jain, S. K., Kurian, A. G., Jeong, I., Park, B. C., Ban, K., Knowles, J. C., & Kim, H. W. (2025). Hair regeneration: mechano-activation and related therapeutic approaches. Journal of Tissue Engineering, 16. https://pmc.ncbi.nlm.nih.gov/articles/PMC12464413/

Panahi, Y., Taghizadeh, M., Marzony, E. T., & Sahebkar, A. (2015). Rosemary oil vs minoxidil 2% for the treatment of androgenetic alopecia: a randomized comparative trial. Skinmed, 13(1), 15-21. https://pubmed.ncbi.nlm.nih.gov/25842469/

Hay, I. C., Jamieson, M., & Ormerod, A. D. (1998). Randomized trial of aromatherapy: successful treatment for alopecia areata. Archives of Dermatology, 134(11), 1349-1352. https://pubmed.ncbi.nlm.nih.gov/9828867/