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KMID : 0604520170430020149
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Journal of the Society of Cosmetic Scientists of Korea
2017 Volume.43 No. 2 p.149 ~ p.155
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Effect of Extract from Fermented Black Soybean (Glycine max var. Seoritae) on the Hair Damaged by Decolorization
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Jung Hee-Hoon
Shin Min-Kyu
Lee Su-Yel
Lee Sang-Rin
Kim Moo-Sung
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Abstract
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This study was carried out to investigate the hair protection effect of fermented black soybean extracts. The morphological characteristics, tensile strength and constitutional changes of the hair were analyzed and compared when the hair was chemically oxidized and then treated with fermented black soybean extract. As a result, treatment of oxidizing agent on virgin hair caused damage on the cuticle layer of the epidermis and decreased in tensile strength of hair from 14.32 ± 0.83 g/cm2 to 12.32 ± 0.79 g/cm2. FT-IR analysis showed the peaks at 1,077, 1,041, and 801 cm-1 of the hair treated with oxidizing agent were increased compared to peak values of virgin hair, indicating that cystein in hair was decreased which is crucial to disulfide bond between keratin. On the other hand, when the damaged hair is treated with the fermented black soybean extract, cracks in the cuticle layer of the epidermis were filled, tensile strength was restored to 14.27 ± 0.96 g/cm2 and the ratio of oxidized cysteine in hair was decreased. These results suggest that the fermented black soybean extract is worthy of further investigation as a protective material for hair damaged by oxidizing agents.
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KEYWORD
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hair care , decolorization , tensile strength , fermented black bean extract , biopolymer
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