51 citations
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January 2014 in “International journal of trichology” This review examines the pH levels of various shampoos and reports no new clinical results, highlighting the potential importance of labeling pH values on shampoo packaging for hair and scalp health.
37 citations
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October 2017 in “Saudi pharmaceutical journal” This study reports that six shampoo brands in Saudi Arabia generally comply with the national specifications, demonstrating good physicochemical properties such as foam stability and pH levels.
December 2025 in “Journal of Pharma Insights and Research.” This study explains the formulation and evaluation of a natural polyherbal shampoo, which effectively colors hair and provides conditioning without the dermal and systemic toxicity risks of synthetic dyes, offering an effective alternative to conventional products.
1 citations
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March 2024 in “International Journal of Applied Pharmaceutics” This study found that varying the concentration of propylene glycol in rice water shampoo gel affects physical properties such as viscosity and foam height, without impacting organoleptic qualities or pH stability.
March 2025 in “PHARMADEMICA Jurnal Kefarmasian dan Gizi” This study evaluated cucumber extract shampoos and found they meet physical quality standards and exhibit strong antifungal activity against Candida albicans fungi, with efficacy increasing with higher concentrations of cucumber extract.