This study developed and evaluated a polyherbal solid shampoo bar using natural ingredients like Amla, Soapnut, Hibiscus, and Aloe vera, and found it to be an effective, safe, and sustainable alternative to conventional hair care products, with good cleansing and lathering properties.
September 2025 in “Ensaios USF” This study developed a solid shampoo formulation with conditioning properties, highlighting its feasibility and environmental benefits compared to conventional shampoos due to biodegradable packaging and no water in its composition, thus offering a sustainable alternative in the cosmetic industry.
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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 2020 in “Journal of Cosmetic Science” This study determined that caffeine content in anticellulite gels was between 0.7% and 1.7%, and about 1.0% in hair-care products.
December 2023 in “International Journal of Newgen Research in Pharmacy & Healthcare” This study evaluated the physicochemical characteristics, safety, and efficacy of six herbal and six synthetic shampoos and found that all products performed well in various tests, with no skin irritancy observed, suggesting that both types can be considered safe for use.