Testosterone and hair loss in FTM transition: what TikTok gets wrong

What did @man_making_motives actually say?

The creator made several claims worth unpacking. First, that testosterone (whether from TRT, HRT, or natural hormonal shifts like menopause) causes hair loss. Second, that three things can prevent or reverse it: "vitamins AKND" combined with high protein and red meat, collagen peptide supplements (specifically calling out Vital Proteins), and a topical mix of hemp oil and minoxidil. The claim that "hemp oil is a natural growth igniter and hair responds to hemp very well" is the one that deserves the most scrutiny here.

The transcript is garbled in places, likely from auto-captions, so "Tessa Oswarone" reads as testosterone, and "vitamins AKND" likely means A, K, N (niacin?), and D. The creator appears to be speaking from personal experience with hormone therapy, which gives them credibility on the lived-experience side but not necessarily on the pharmacology.

Does the science back this up?

Partially. The testosterone-to-DHT connection driving androgenetic alopecia is well-established. The collagen and protein claims have some support. The hemp oil claim does not.

Testosterone converts to dihydrotestosterone (DHT) via the enzyme 5-alpha reductase. DHT binds to androgen receptors in hair follicles and shrinks them over time. This process is documented extensively, including in transgender men on testosterone therapy. Randolph (2018, Dermatologic Clinics) confirmed that androgenetic alopecia is a real concern for transmasculine individuals on testosterone.

Minoxidil does have evidence. It was FDA-approved for hair loss decades ago, and a 2022 review by Nestor et al. in the Journal of Cosmetic Dermatology confirmed topical minoxidil's efficacy. Mixing it with hemp oil, however, is not a studied formulation. There is no peer-reviewed evidence that hemp oil enhances minoxidil absorption or adds independent hair growth benefit. One small 2021 study (Ercan et al., Dermatologic Therapy) looked at hemp seed oil's fatty acid profile and suggested theoretical anti-inflammatory properties, but that is a long way from "natural growth igniter."

What did they get wrong (or right)?

They got the core mechanism right and the hemp oil claim wrong. The minoxidil recommendation is directionally correct but the framing around hemp oil is not supported by evidence.

Credit where it is due: testosterone does accelerate androgenetic alopecia in people with a genetic predisposition, and this applies across sexes and hormone contexts including menopause. That part is accurate. Protein intake matters for hair health. Collagen peptide supplements have some supporting data, though the effect sizes are modest. A 2019 randomized controlled trial by Hexsel et al. in the Journal of Cosmetic Dermatology found improvements in hair thickness with oral collagen peptide supplementation.

Where this goes wrong: calling hemp oil a "natural growth igniter" is an overstatement with no clinical backing. The creator also does not distinguish between preventing further loss and regrowing hair, which are very different biological challenges. Minoxidil has evidence for slowing loss and modestly promoting regrowth. Hemp oil has neither.

What should you actually know?

If you are on testosterone therapy or going through menopause and noticing hair thinning, you have real options, but hemp oil is not one of them with any clinical confidence.

Minoxidil (topical or oral) is the most evidence-backed over-the-counter option. Finasteride and dutasteride block 5-alpha reductase and reduce DHT, but they are prescription medications with side effect profiles that require a clinician conversation, especially for people on hormone therapy. Low-level laser therapy has modest supporting evidence. Nutritional deficiencies, particularly in ferritin, zinc, and vitamin D, can worsen hair loss and are worth testing before buying supplements. The "vitamins AKND plus red meat" advice is not wrong for general nutritional support, but it is not a hair loss treatment on its own. Anyone experiencing significant shedding on HRT or TRT should bring it up with their prescribing provider before self-treating with topical DIY formulations.