The Hairy Pill: Reviews, Cost, Side Effects & Does It Work?

There’s no shortage of hair loss treatments out there, but most require multiple products, messy applications, or a pharmacy run every few weeks. The Hairy Pill takes a different approach: one daily capsule, developed by an Australian dermatologist, with ingredients that get third-party tested for quality. But does the science stack up, and is the cost actually worth it for someone in Australia? This article cuts through the marketing to look at what the clinical data shows, what users report, and how The Hairy Pill stacks up against the alternatives.

Daily Cost: Less than $2.50 · Reviews on Trustpilot: 215 · Format: One pill a day · Patented: Yes, by Australian dermatologist · Target Users: Men & Women

The table below consolidates the key product specifications for The Hairy Pill.

Does The Hairy Pill Regrow Hair?

The core question anyone considering The Hairy Pill wants answered is straightforward: will it actually grow hair back? The product’s formulation centers on oral minoxidil as the primary active ingredient, a medication that works by dilating blood vessels and improving blood flow to hair follicles.

Evidence from users

Trustpilot reviews mention measurable changes over time. One user reported that after several months of consistent use, “My hair feels thicker, and the shedding has noticeably reduced.” The Hairy Pill states that consistent daily intake for a minimum of a few months is typically required before results become visible. The company does not guarantee treatment success, acknowledging that some users continue experiencing hair loss despite taking the treatment.

Clinical basis

Professor Rodney Sinclair, the Australian dermatologist who developed and clinically tested The Hairy Pill technology, has treated over 20,000 patients with his formulation. The Hairy Pill website notes that cumulative clinical assessment data collected from 2019 to 2024 covers 30,000 patients. However, independent peer-reviewed studies specifically validating The Hairy Pill formulation were not found in publicly available search results, meaning most clinical context comes from the company and its associated publications.

The implication: The formulation has a dermatologist’s name behind it, and the patient numbers are large by Australian telehealth standards. But independent verification of regrowth percentages against a placebo group is not publicly available, so the clinical claim sits in a gray zone between “studied” and “proven in peer-reviewed trials.”

Does The Hairy Pill Cause Weight Gain?

A common concern that surfaces in hair loss supplement forums is whether biotin or other active ingredients contribute to weight gain. This question comes up specifically with The Hairy Pill because the company adjusts formulations, and biotin is a common additive in hair-nail-skin products.

Biotin and weight concerns

Research does not establish a direct link between biotin supplementation and weight gain in healthy individuals. According to Mayo Clinic and dermatology literature, biotin supports hair growth by contributing to keratin infrastructure, but biotin is water-soluble, meaning excess amounts are typically excreted rather than stored as fat.

Reported side effects

What does show up in The Hairy Pill’s side effect profile? The company reports that less than 2% of patients experience side effects, with the main reported issue being postural hypotension—lightheadedness and dizziness caused by the minoxidil component dilating blood vessels. Finasteride, when present in a patient’s formulation, carries documented sexual side effect risks: erectile dysfunction in 5-19% of patients, ejaculatory dysfunction in 1-7%, and reduced sex drive in 2-10% of patients, per HairScience’s analysis of clinical literature.

What this means: The weight gain concern appears to be a myth carried over from general supplement forums rather than a documented risk of The Hairy Pill specifically. The actual documented side effects to monitor are cardiovascular (from minoxidil) and sexual (from finasteride or dutasteride when those ingredients are included).

How Much Does The Hairy Pill Cost?

Understanding The Hairy Pill’s pricing structure matters because it’s a subscription model that starts with a higher upfront cost before settling into a lower monthly rate.

Pricing details

The initial subscription costs $225 AUD to cover the first 3 months of treatment, with refills processed every 3 months and each supply adequate for that period. After the initial 3 months, the cost drops to $75 AUD per month, which works out to approximately $2.50 per day. Pills, doctor consultations, and express delivery fees are all included in the subscription costs. There are no additional charges or lock-in contracts, and side effect adjustments including dose changes or ingredient modifications are made at no additional charge.

Availability in Australia

The Hairy Pill is currently only sold in Australia, with the entire process—consultation, prescription, and delivery—handled online. It is not available at Chemist Warehouse or other retail pharmacies. Customers who have reviewed the service note that customer service has received compliments for being helpful, courteous, and fast.

The pricing breakdown table below shows how The Hairy Pill structures its subscription costs.

The pattern: Three subscription tiers, each dropping the per-unit cost, with the ongoing monthly rate representing the sustainable long-term price. For Australian users who want to trial the treatment, the initial $225 provides a 3-month window to assess tolerance before committing to the recurring $75 monthly model.

Is The Hairy Pill Legit?

Given that The Hairy Pill is an online-only service without physical clinic locations, the question of legitimacy centers on three pillars: who developed it, who prescribes it, and what independent sources say.

Reviews and trust signals

The company maintains 215 reviews on Trustpilot, and user testimonials mention improvements in hair thickness and shedding reduction. However, some users report that The Hairy Pill’s consultation model has limitations, with patients potentially seeing different doctors for follow-up appointments, which can affect continuity of care. The company has also been featured in a Channel 7 NEWS story, though no peer-reviewed published studies validating the formulation were found in available search results.

Doctor-prescribed

All prescriptions are written by Australian-registered doctors through the online platform. Professor Rodney Sinclair, the dermatologist who developed the technology, is a recognized figure in Australian dermatology. The Hairy Pill states that active ingredients are consistently tested by a third party to ensure correct quantity and quality, addressing a common concern about compounded formulations.

The trade-off: The prescription model and dermatologist association provide credibility that typical supplement companies lack. But the lack of independently published clinical trial data means you’re partly relying on the company’s own clinical assessment figures (30,000 patients from 2019-2024) rather than peer-reviewed verification.

Mosh vs Pilot vs The Hairy Pill vs Gro Clinics

Australian consumers comparing hair loss treatments have several options beyond The Hairy Pill. Here’s how the main competitors stack up.

Key differences

The comparison table below highlights how The Hairy Pill differs from its main Australian competitors.

Four services, one shared limitation: none have published peer-reviewed head-to-head efficacy data. The comparison rests on format convenience (one pill vs topical applications), consultation model (online vs in-person), and price structure.

User feedback comparison

Trustpilot reviews for The Hairy Pill highlight hair thickness improvements and reduced shedding. Mosh and Pilot reviews mention similar satisfaction patterns around convenience, though comparison is difficult due to different review sample sizes. Gro Clinics reviews emphasize the in-person assessment experience, though this comes with higher upfront costs for clinic visits.

Related reading: Low Maintenance Hairstyles for Women with Fine Hair · Mermaid Hair Curler Guide

Frequently asked questions

“My hair feels thicker, and the shedding has noticeably reduced.”

— Trustpilot reviewer

“Minoxidil can help stimulate hair regrowth within consistent use.”

— HairScience

For Australian consumers considering The Hairy Pill, the practical decision is clear: start with the initial 3-month subscription at $225 to assess personal tolerance and efficacy, watch for postural hypotension symptoms in the first weeks, and be prepared for a months-long commitment before evaluating whether the treatment is working for your specific situation. If immediate results or international availability are priorities, The Hairy Pill is not the right choice.