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KMID : 0604520230490030213
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Journal of the Society of Cosmetic Scientists of Korea
2023 Volume.49 No. 3 p.213 ~ p.223
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Monitoring of Quality Characteristics and Harmful Substances in Commercial Handmade Soap
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Kim Yeon-Ji
Lee In-Sook
Kim Su-Ae
Kim Koth-Bong-Woo-Ri
Yun Ho-Cheol
Gu Pyeung-Tae
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Abstract
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A total of 81 handmade soaps on sale on the market were collected from January to November 2022. To compare quality characteristics, all ingredients were referred to, and the pH, dry reduction, heavy metals (lead, arsenic, cadmium, antimony, and mercury), and contents of free alkali were measured. All soaps had a slightly alkaline pH of 7.9 to 11.2, average drying loss was 17.6%, and free alkali was hardly detected. The average values of all heavy metals were 0.104 ㎍/g for lead, 0.035 ㎍/g for arsenic, 0.002 ㎍/g for cadmium, 0.048 ㎍/g for antimony, and 0.0003 ㎍/g for mercury.
The results of handmade soap were below the recommended in regulations on safety standards for cosmetics of Ministry of Food and Drug Safety.
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KEYWORD
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handmade soap, harmful substances, allergenic materials, cosmetics
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