• Journal of the Society of Cosmetic Scientists of Korea
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• v.32 no.2 s.57
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• pp.81-88
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• 2006

Amino acid complex was made with the composition of amino acids quite similar to that of stratum corneum on the skin. In order to evaluate the efficacy of amino acid complex on the skin as an active cosmetic ingredient, we measured cytotoxicity. TIMP-1 expression, moisturizing effect and the amount of horny substance. In cytotoxicity assay, amino acid complex did not show any cytotoxicity. In moisturizing effect test using corneometer, it showed very good moisturizing effect. In TIMP-1 mRNA assay using RT-PCR, moo acid complex showed the increase of TIMP-1 expression, suggesting that amino acid complex have anti-wrinkle effect. Therefore, amino acid complex may be useful as an active ingredient for anti-aging.

• Journal of the Korean Applied Science and Technology
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• v.38 no.4
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• pp.922-930
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• 2021

This study was attempted to investigate the availability of nipa palm (Nypa fruticans Wurmb.) and finger root (Boesenbergia pandurata) extracts as natural cosmetic ingredients. For this, O/W cosmetic formulations with different compositions were prepared. The appearance of the cosmetic formulations was compared, and brightness and color values were measured using a colorimeter. Also, the pH, viscosity, and texture of the cosmetic formulations with different compositions were measured, and the effects of the extracts on the properties of the cosmetic formulations were examined. Finally, the UV transmittance and sun protection factor (SPF) index were observed, and the results confirmed the availability of finger root extract as a natural ingredient for UV protection.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.25 no.4 s.34
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• pp.51-55
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• 1999

Cosmetic mask is one of the traditional cosmetic product and is used to keep skin healthy and beautiful through moisturizing effect, cleansing effect and acceleration effect on microcirculation. There are several types of cosmetic mask such as peel-off type, tissue-off type, wash-off type and cotton sheet type immersed in cosmetic water. It is important for cosmetic formulators to develop an adequate type of cosmetic mask that meets the needs of the target consumers because each type of cosmetic mask has benefits and problems in its usage and efficacy. Polyvinyl alcohol (PVA) is widely used as an active ingredient of peel-off type cosmetic mask and the physical property of the PVA film changes with the usage of other ingredients. We studied the change of physical properties of the film containing PVA by formulating peel-off type cosmetic mask with the variation of humectants. Methylguceth-20 and glycereth-26 reduce the interaction between skin surface and PVA film without serious weakening of tensile strength and they can alleviate irritation. Glycerin, urea and betaine help PVA film soften and they also have excellent efficacy as humectants.

• Proceedings of the SCSK Conference
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• 1999.10a
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• pp.51-55
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• 1999

Cosmetic mask is one of the traditional cosmetic product and is used to keep skin healthy and beautiful through moisturizing effect, cleansing effect and acceleration effect on microcirculation. There are several types of cosmetic mask such as peel-off type, tissue-off type, wash-off type and cotton sheet type immersed in cosmetic water. It is important for cosmetic formulators to develop an adequate type of cosmetic mask that meets the needs of the target consumers because each type of cosmetic mask has benefits and problems in its usage and efficacy. Polyvinyl alcohol (PVA) is widely used as an active ingredient of peel-off type cosmetic mask and the physical property of the PVA film changes with the usage of other ingredients. We studied the change of physical properties of the film containing PVA by formulating peel-off type cosmetic mask with the variation of humectants. Methylguceth-20 and glycereth-26 reduce the interaction between skin surface and PVA film without serious weakening of tensile strength and they can alleviate irritation. Glycerin, urea and betaine help PVA film soften and they also have excellent efficacy as humectants.

• Korean Journal of Plant Resources
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• v.26 no.3
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• pp.403-409
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• 2013

This study has assessed the anti-oxidative activities and cytotoxic effects of Lithospermum erythrorhizon ethanol extract and measured the effects of tyrosinase inhibition activities with a goal of estimating the usage of the medicinal plant as an ingredient of cosmetics. First, to perform a basic test on the extract, pH and UV-spectrum were measured. According to the measurement, the extract had control functions at pH 5.5, and maximum absorbance occurred at 530nm. In particular, DPPH (1-1-diphenyl-2-picryl-hydrazyl)-inhibiting activity (IC50) and polyphenol content were 149.81 ${\mu}g/mL$ and $51.28{\pm}2.52$ mg/mL respectively. In addition, as extract concentration increased, tyrosinase inhibition activities improved as well. In raw 264.7 cell-based MTT assay, cell survival rates were 98% at 1000 ppm and 153% at 100 ppm. Therefore, it's been confirmed that there is almost no cytotoxin. According to the test results above, it appears that the Lithospermum erythrorhizon ethanol extract would be effective in anti-oxidation and application as a cosmetic ingredient.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.33 no.4
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• pp.275-280
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• 2007

In this study, we evaluate anti-oxidation, whitening and anti-inflammatory efficacies of Euphorbia jolkini extract for application as a cosmeceutical ingredient. We separated 5 fractions from Euphorbia jolkini extract (70 % MeOH) by MPLC. First and 5th fractions showed a supressive effect on Mn-SOD synthesis in the normal human fibroblasts. They inhibited melanogensis in the B16-F10 melanma cells. Furthermore, 1st and 5th fractions reduced the amounts of $IL-1{\alpha}$, IL-6, COX-II and total NO secreted from the normal human fibroblasts. These results suggest that Euphorbia jolkini extract may be used as an active ingredient in cosmetics.

• Journal of the Korean Applied Science and Technology
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• v.38 no.1
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• pp.186-195
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• 2021

In this study, when stem cell culture solution is used as a cosmetic ingredient, one of the most prominent problems is that the ingredients generally have low thermal stability. Therefore, in this study, in order to find out how the stem cell culture medium is heated or preserved at high temperature, the effect of various effects of stem cells on the various effects of the stem cells was investigated. Investigated. As a result of the experiment, the wound healing assay confirmed that the cell migration increased after 6 hours, and after 24 hours, it was confirmed that the cell mobility was increased and cell division was promoted, thereby being concentrated. As a result of investigating the amount of transdermal water loss by preparing a cosmetic product containing stem cell culture solution, it was confirmed that the culture solution addition group showed an improvement rate of 31% compared to the non-added group, thereby helping in skin wound recovery. As a result of this, it is considered that this point should be considered when the stem cell culture medium is used as an active ingredient in cosmetics in the future.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.34
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• pp.189-223
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• 2007

In Korea-U.S.A. FTA Negotiation, U.S.A. request to eliminate barriers of tariffs and non-tariff in trade of cosmetics. Korea applies tariffs of 8% on most cosmetics and personal care products. There are some non-tariffs barriers in cosmetics trade between Korea and U.S.A., for example, transparency on restriction and regulatory, cosmeceuticals, import clearance review, quality control testing, ingredient labelling. Tariffs of 8% on most cosmetics should be eliminated, a proviso of complementary measures on sanitation of Korean people about imported cosmetics. This is a meaning of reformation of prior management(tariffs) by strong ex post management in cosmetics trade. It is important that Korea should construct system of ex post management, for instance, construction of data base on manufacturer, importer, bland name of cosmetics and all ingredients of cosmetics. This is concerned with labelling of cosmetics and cosmeceutical and publication of Korean edition of INCI(International Nomenclature of Cosmetic Ingredient).

• Toxicological Research
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• v.27 no.4
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• pp.205-209
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• 2011

The present study was performed to compare the antioxidative and whitening activities of fermented soybean extract (FSB) and non-fermented soybean extract (SB). Antioxidative and whitening activities of FSB and SB were evaluated by the determination of DPPH, superoxide radical and hydroxyl radical scavenging activities, linoleic acid inhibition activity, and tyrosinase inhibition activity. FSB showed the higher effect than SB in the antioxidative activities. Also FSB showed the better effect than SB in whitening activity. These results demonstrated that the fermentation played a more excellent role than the non-fermentation in antioxidation and whitening. Therefore, this study suggested that FSB could be a useful cosmetic ingredient for antioxidation and skin whitening.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.16 no.1
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• pp.30-39
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• 1990

Angelica gigas extract and Cnidium of ficinale extract in Bath essence were determined by high performance liquid chromatography with a UV detector by use of Bondapak C-18 column. Decursin and Ligustilide were used as indicator ingredient for analysis of Angelica gigas extract and Cnidium of ficinale extract. Each indicator ingredient was isolated from each plant and purified using silver-ni-trate treated silica column. Their structure were conformed with IR, NMR and HPLC. The recoveries of Angelica gigas extract and Cnidium officinale extract added to Bath essence sample were 96.5-109.5% and 112-115%.