LLLT can be effective for pattern baldness. It can reduce hair loss, and provide a bit of regrowth. Just don't expect miracles.
I don't have experience with the Capillus cap, but in my opinion, $3K is way too much to spend on a LLLT device. There are a number of alternatives for far less money. More lasers may provide a slightly better result, but even devices with a more limited number of lasers can be effective. I would choose a balance between the number of lasers and the cost.
A new study:
Dermatol Surg. 2018 Jun 27. doi: 10.1097/DSS.0000000000001577. [Epub ahead of print]
Efficacy and Safety of a Low-Level Light Therapy for Androgenetic Alopecia: A 24-Week, Randomized, Double-Blind, Self-Comparison, Sham Device-Controlled Trial.
Mai-Yi Fan S1,
Cheng YP2,
Lee MY3,
Lin SJ1,4,5,6,
Chiu HY1,4,7.
Abstract
BACKGROUND:
Previous studies have reported the benefits of low-level/light laser therapy (LLLT) for the promotion of hair regrowth. However, the effectiveness of LLLT for the treatment of androgenetic alopecia (Androgenetic Alopecia) is still a topic of debate.
OBJECTIVE:
To investigate the efficacy and safety of LLLT on hair regrowth in patients with Androgenetic Alopecia.
METHODS:
This 24-week, randomized, double-blind, self-comparison, sham device-controlled trial enrolled 100 patients with Androgenetic Alopecia. All participants were randomly assigned to receive the investigational LLLT on one side of the head and sham light treatment on the contralateral side, 3 times weekly for 30 minutes each, over a 24-week period. Global scalp photography, phototrichogram assessment, the investigator's global assessment (IGA) of hair regrowth, and the subject's assessment of the treatment satisfaction were used for evaluation.
RESULTS:
After 24 weeks of treatment, the LLLT-treated scalp exhibited significantly greater hair coverage than the sham light-treated side (14.2% vs. 11.8%, p < .001). A significantly greater improvement from baseline in hair thickness, hair count, hair coverage, and IGA were also observed in the LLLT-treated side than in the sham light-treated side at the 12- and 24-week visits. No serious adverse events were observed.
CONCLUSION:
The use of LLLT might be an effective, safe, well-tolerated treatment for Androgenetic Alopecia.