Hair regrowth TikTok: what Nizoral, minoxidil and peptide serums can actually do

What did @beaussima actually say?

The creator walked through a four-product hair loss routine she spotted at Boots, aimed at women experiencing hair shedding. She recommended washing with 2% ketoconazole shampoo to "calm any inflammation on the scalp," using a peptide and caffeine density serum for "new growth," considering 5% minoxidil for more severe loss, and adding an aminexil serum to "anchor the hair to the scalp." She also flagged supplements and a growth shampoo. No dosing claims, no prescription advice. This was a product haul, not a medical consultation, and it generally stayed in its lane.

The framing is casual and community-oriented, which is fine. But casual framing does not exempt health claims from scrutiny, and a couple of the mechanistic explanations she offered range from oversimplified to just wrong.

Does the science back this up?

Broadly, yes, but the details matter. Minoxidil and ketoconazole have the strongest evidence. Peptide serums and aminexil are in a much grayer zone.

Minoxidil at 5% foam for women has solid regulatory backing. A randomized controlled trial by Olsen et al. (2004, Journal of the American Academy of Dermatology) found 5% minoxidil significantly outperformed 2% in women with androgenetic alopecia. The mechanism she described, keeping hair in the growth phase longer, is partially correct. Minoxidil prolongs the anagen phase and increases follicle size, though the "push out old tired follicles" language is an oversimplification that could alarm users who experience initial shedding.

Ketoconazole's role in hair loss is less about dandruff and more about its mild anti-androgenic and anti-inflammatory properties. A study by Piérard-Franchimont et al. (1998, Dermatology) found that 2% ketoconazole shampoo improved hair density compared to placebo in men. Women's data is thinner, but the mechanism is plausible.

The Ordinary's serum contains GHK-Cu, a copper peptide with some in-vitro evidence for stimulating hair follicle activity, but human RCT data is sparse. Caffeine has early-stage evidence from Fischer et al. (2007, International Journal of Dermatology) showing it may counteract testosterone-induced suppression of follicle growth in vitro. Promising, not proven.

What did they get wrong (or right)?

The minoxidil explanation is where she stumbled most. Saying it will "push out those old, tired follicles and give you nice new shiny, strong, long hair" dramatically understates the shedding phase. When minoxidil is first used, many women experience an initial shed lasting 2 to 8 weeks as resting hairs are displaced by new anagen hairs. Not mentioning this is a meaningful omission. Someone not warned about initial shedding may assume the product is making things worse and quit before seeing benefit.

The aminexil claim, that it "anchors the hair to the scalp and prevents it from falling out," is essentially L'Oreal marketing language. The actual proposed mechanism involves preventing perifollicular fibrosis, not a literal anchoring. Independent peer-reviewed evidence for aminexil is limited, mostly manufacturer-funded. It is not inaccurate to include it, but presenting it with the same confidence as minoxidil overstates what we know.

She got the ketoconazole framing mostly right. Scalp inflammation is a documented contributor to hair miniaturization, and using an anti-inflammatory, anti-androgenic shampoo as a base layer is a reasonable strategy supported by dermatologists.

What should you actually know?

If you are losing hair, the first step is figuring out why, not stacking products. Female hair loss has multiple causes: androgenetic alopecia, telogen effluvium triggered by iron deficiency or thyroid dysfunction, traction alopecia, and autoimmune conditions like alopecia areata all require different approaches. A blood panel before a product haul is not glamorous content but it is more useful.

Minoxidil is the only topical in this routine with strong, replicated clinical evidence for female pattern hair loss. It requires consistent daily use for at least 4 to 6 months before meaningful results appear, and hair loss typically returns if you stop. That context matters when someone is deciding whether to start.

Peptide serums like GHK-Cu appear in the category this platform covers. The in-vitro data is interesting. Fatherazi et al. (2020, Biomolecules) reviewed copper peptide activity and found plausible mechanisms for follicle stimulation, but human trials are not yet robust enough to make strong efficacy claims. They are not harmful additions, but they should not be presented as equivalent to minoxidil in terms of evidence.

Anyone with significant or sudden hair loss should see a dermatologist or trichologist before spending money on a full product stack.