August 2025 in “Journal of the Korean Society of Cosmetology” This study found that the perception of hair loss symptom relief shampoos has increased across various demographics, and that satisfaction with these products is linked to features like scalp anti-aging and hair root strengthening, indicating a consumer preference for specialized functional shampoos.
This study examined the use of Purwaceng extract in shampoo formulations, concluding that a specific formula (Sample F1) showed good stability and safety, suggesting its potential effectiveness for hair health issues like dandruff and hair loss.
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April 2007 in “Journal der Deutschen Dermatologischen Gesellschaft” This article reviews the development and formulation of shampoos, emphasizing their dual role as cosmetic and medicinal products, but presents no new experimental findings.
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.
This study found that while many shampoo ingredients are marketed as effective against hair loss, only caffeine, adenosine, placental proteins, and melatonin have moderate clinical evidence for efficacy, and a majority of other claimed active ingredients lack clinical trial verification.