Modern shampoos use a mix of surfactants and other ingredients to clean, reduce irritation, and improve performance.
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March 2019 in “European Journal of Dermatology” Pharmacy-sold shampoos tend to have fewer allergens compared to those sold in other stores.
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October 2017 in “Saudi pharmaceutical journal” All evaluated shampoos meet Saudi standards.
September 2013 in “Daehan hwajangpum hakoeji/Daehan hwa'jangpum haghoeji” Shampoo with ginseng helped improve hair thickness, density, growth, and reduced hair loss.
July 2021 in “Clinical Case Reports and Clinical Study” Herbal hair gels are better for hair health than synthetic ones.