From Root to Ritual

A 2009 study of 823 women confirmed that the highest percentage of telogen-phase hairs occurs in summer — meaning more hairs are in the resting phase right now, in late July. Three to four months from now, those hairs shed. The autumn shed is documented, it is biological, and it follows a predictable annual rhythm. Here is the science behind it, how to tell if yours is seasonal or something else, and the one thing that changes whether the shed is mild or significant.

This week covered seven ingredients — bhringaraj, ginger, rosemary, saw palmetto, nettle, scalp massage, vitamin D. A lot of science. This Sunday is not science. It is the thing underneath all of it: what actually changes when you stop approaching your hair as a problem to be solved and start approaching it as a signal worth understanding. Three months into this series — here is the shift that makes everything else work better.

Stinging nettle (Urtica dioica) has been used in hair care across cultures for centuries — but until recently, the mechanism was more traditional wisdom than confirmed science. A 2023 in vitro study confirmed that nettle leaf extract significantly downregulates 5-alpha reductase type II gene expression. A 2025 computational study identified six compounds in nettle with strong binding affinity to the same enzyme. Here is what nettle does for hair — and the honest difference between what the lab confirms and what clinical trials haven't yet fully established.

A standardised scalp massage of four minutes daily for 24 weeks produced measurably thicker hair compared to a control group that received no massage. No product. No supplement. No prescription. Just four minutes of consistent daily pressure applied with the fingertips. Here is what the trial found, the three mechanisms behind it, and the exact technique worth adopting this summer.

A 2015 randomized comparative trial found rosemary oil matched minoxidil 2% for hair count at 6 months — with significantly less scalp itching. That result is real. But there are three things the citations usually leave out: the comparison was to 2% minoxidil, not the 5% commonly prescribed today. Neither group saw significant results at 3 months — only at 6. And a fresh double-blind RCT (Rosmagain™) now shows 57.73% hair growth rate improvement and 68.70% thickness increase vs placebo. Here is the complete picture.

Saw palmetto (Serenoa repens) inhibits 5-alpha reductase — the same enzyme as finasteride — but at 30-40% compared to finasteride's 70% and dutasteride's 98%. A 2025 RCT showed significant improvement in hair density and quality. A 2026 180-day extension confirmed continued improvement with no adverse events. Here is the complete honest picture — what saw palmetto does, how it compares to pharmaceutical options, who it's enough for, and who needs something stronger.

Bhringaraj (Eclipta alba) is the most revered herb in Ayurvedic hair medicine — used for over a thousand years to promote hair growth and scalp health. A 2025 prospective clinical trial (Journal of Ayurveda and Integrated Medical Sciences) enrolled 54 participants over 24 weeks and found significant reduction in hair shedding corroborated by patient-reported outcomes. Separately, research confirms its petroleum extract performs comparably to 2% minoxidil. Here is what the science actually says about the herb in your Laritelle formula.

A PMC landmark study found 80% of participants in the microneedling plus minoxidil group showed moderate-to-great hair regrowth — vs 4.5% in the minoxidil-only group. A 2025 systematic review confirmed microneedling increases both rate of absorption and onset of action for minoxidil. But a March 2026 JAAD study found that wrong needle size, wrong frequency, and wrong technique actively damage the scalp barrier. Here is the complete picture — what works, what doesn't, and what the 1.0mm vs 1.5mm needle debate actually means.

If you've ever used a highly-rated hair product that did nothing for your hair, hair porosity is likely the missing link. Porosity determines whether water and products actually penetrate your hair shaft or sit on top of it. The float test you've seen on TikTok doesn't work. Here is how to actually test it, what your result means, and the specific product choices each porosity type needs.

"Adrenal fatigue" has 16 million TikTok views and zero recognition from medical organisations as a real diagnosis. What IS real is HPA axis dysfunction — a disruption of the cortisol signalling system that mainstream medicine has documented extensively. The hair loss it causes is genuine: hair thinning, increased shedding, and reduced density are all documented outcomes of dysregulated cortisol. Here is the honest version of the adrenal fatigue story — and what actually helps.

Birth control pills can influence hair health, sometimes improving or worsening hair loss — and the American Hair Loss Association has specific guidance on this that most women are never told when they're prescribed. The key variable: the androgen index of the progestin in your pill. High androgen index progestins can trigger or worsen female pattern hair loss in susceptible women. Low androgen index pills may actually help. Here is how to know which category yours falls into.

A peer-reviewed review of 24 studies covering 1,787 patients found that the Mediterranean diet and isoflavone-rich soy contain anti-inflammatory nutrients that may promote hair health in AGA. The gluten-free diet only helped in AA patients who also had celiac disease — not in people without it. And high mercury fish consumption was linked to AA and telogen effluvium. Most hair-and-diet articles miss both caveats. Here is the honest summary.