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research Development of a stiffness‐angle law for simplifying the measurement of human hair stiffness

3 citations , January 2018 in “International Journal of Cosmetic Science”

In this study, researchers developed a method called the Stiffness-Angle Law and found that hair treated with caffeine-infused shampoo showed a 13.2% increase in stiffness, as measured by their novel evaluation technique.

research Ingredients of Trichological Shampoos with Alleged Beneficial Effects on Hair—What Is Really Known About Their Efficacy? A Scoping Review of an Area with More Unknowns than Knowns

November 2025 in “Cosmetics”

This study found that of the many ingredients advertised in shampoos as effective against hair loss, only caffeine, adenosine, placental proteins, and melatonin have limited clinical evidence supporting their efficacy, with most claimed active ingredients lacking any trial-based validation.

research Caffeine as an Active Ingredient in Cosmetic Preparations Against Hair Loss: A Systematic Review of Available Clinical Evidence

February 2025 in “Healthcare”

In this systematic review, the researchers observed that topical caffeine preparations appear safe and effective against hair loss, but most studies had low-quality evidence due to design flaws, indicating the need for better-designed trials before drawing definitive conclusions.

research Caffeine as an Active Molecule in Cosmetic Products for Hair Loss: Its Mechanisms of Action in the Context of Hair Physiology and Pathology

January 2025 in “Molecules”

In this review, the authors discuss caffeine's potential mechanisms and benefits as a hair loss treatment, noting its possible effectiveness and safety, though they caution that existing studies often have significant design flaws.

research A Summary of Pre-Clinical and Clinical Evidence for Cannabinoid Hair Follicle Effects

January 2022 in “Clinical dermatology open access journal”

This review summarizes research on cannabinoids like CBD and THCV, reporting that they improve hair growth in patients with androgenetic alopecia when applied topically, with CBD showing a dose-dependent effect.

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community Has anyone ever heard of this Urbanman Australia Hair Growth shampoo?

in Treatment 2 upvotes 1 year ago

The conversation discusses the effectiveness of Urbanman Australia Hair Growth shampoo, which contains rosemary and castor oils, but likely in low concentrations. The shampoo may improve scalp condition but is not expected to significantly impact hair growth; it also contains caffeine and has antibacterial, antifungal, and antidandruff properties.

community My 2 cents about shampoos, the thing that stopped me shedding hairs like crazy

43 upvotes 2 years ago

Using regular Head & Shoulders shampoo stopped hair shedding and itchiness, unlike natural shampoos and oils. Minoxidil and finasteride were also used but didn't stop the shedding.

community Rosemary vs Redensyl. Which one is better? Why?

4 upvotes 3 years ago

The conversation discusses hair loss treatments, specifically comparing rosemary and Redensyl, with the original poster already using finasteride and minoxidil. Users also mention using topical melatonin, caffeine, geranium, rosemary oil, jojoba, coconut, and argan oil for hair and scalp care.

community Is this regrowth? My doctor took these photos and said I looked better.

in Satire 142 upvotes 1 year ago

The conversation humorously discusses an extensive and exaggerated hair loss treatment regimen, including finasteride, dutasteride, minoxidil, pyrilutamide, RU58841, and various other therapies. Despite the numerous treatments, the effectiveness is questioned, and the user humorously considers adding more minoxidil.

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