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Scalp & Hair Care
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0:34Why a Creator Added a Scalp Serum to Her Xtressé Routine
Creator Lola Triplett has been taking Xtressé gummies and is adding the FR Concentrate Serum. She likes that it focuses on the scalp, feels lightweight and doesn't leave her hair greasy.
Laser Light and Hairs Grown in a Lab Dish: A 2010 Study
A small 2010 lab study, reported in a Journal of the American Academy of Dermatology abstract, measured how hairs kept in a dish grew under two laser wavelengths; with one donor and no statistics shown, it can't tell us what happens on a scalp.
What Is Laser Therapy for Hair? A Look at a 2009 Laser Comb Study
A 2009 study tested a hand-held, low-level laser comb in 123 men, ages 30 to 60, with male pattern hair loss (androgenetic alopecia). The men used either the laser comb or a look-alike sham device for 15 minutes, three days a week, for 26 weeks. The authors report that average hair counts in a small measured patch of scalp rose in the laser group and fell in the sham group, while investigators rating overview photos saw no meaningful difference. Women weren't included, and the device maker sponsored the study.
Low-Level Laser Therapy and Hair: What a 2009 Chapter Explains
According to a 2009 textbook chapter, low-level laser therapy (LLLT) uses low-power laser light that doesn't heat the skin. The chapter reviews its history, the theories about how it might affect hair and two 26-week laser comb studies in people with pattern hair loss. One widely accepted theory is that cells absorb red and near-infrared light, but the authors say there's no defined mechanism yet. They also list many open questions, from the right dose to long-term results.
5 min readTwo Hairs, One Spot: Why Your Hair Grows in Little Bunches?
Seeing two or even multiple hairs in one follicle opening usually isn't a glitch. Scalp hair grows in tiny natural bunches called follicular units, and each one holds 1 to 4 terminal (thicker) hairs, according to StatPearls. On a healthy scalp, 2 to 3 hairs typically come out of each unit, a 2011 trichoscopy review reports, so a pair of hairs sharing one spot is simply how a scalp is built. An average scalp has somewhere between 100,000 and 150,000 follicles, according to StatPearls. New hair follicles don't form after birth, StatPearls notes, so the layout you have now was set early.
