• 대한화장품학회지
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• 제49권4호
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• pp.355-364
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• 2023

입술은 구조적으로 일반 피부와 다른 특유의 각질, 보습 특성을 갖는다. 특히, 각질의 턴오버 주기가 빠르고 최외곽 각질층이 얇아 비교적 각질의 발생량이 많고, 부속기관이 존재하지 않아 수분 유지에 매우 취약한 환경을 가지고 있다. 본 연구에서는 새롭게 개발될 립케어 제품의 타겟을 각질-보습-장벽 세 가지로 설정하고 각 맞춤 소재의 개선 가능성을 확인하는 것을 목표로 하여 각질 박리 효능이 있는 소재 3 종에 대해, 각질, 보습, 장벽 개선 효능을 검증하였다. 구체적으로 Bacillus clausii extract에 의한 각질 개선, 글루코노락톤에 의한 피부 수분 보유량 개선, 세린에 의한 장벽 기능 강화 효능을 확인하였다. 립케어의 인체 효능 검증을 위해 각 효능 성분의 자극이 없는 범위의 농도를 설정하여 립밤 제조 및 인체 효능 평가를 진행하였고, 입술 각질·보습·탄력·주름 개선의 효능이 있음을 확인할 수 있었다. 결과적으로 입술의 각질-보습-장벽 케어를 통해 입술의 미용, 건강 지표가 개선될 수 있음을 확인하고 해당 소재들을 립세린 제품에 적용하였다.

• 대한화장품학회지
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• 제48권1호
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• pp.71-76
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• 2022

본 연구에서는 화장품소재로서 락토바실러스 람노서스(Lactobacillus rhamnosus)로 발효된 유자발효물의 항산화 활성, wound healing, 보습 및 미세먼지 차단 효능을 조사하였다. 항산화 활성을 측정한 결과, 유자발효물에서 우수한 DPPH 라디칼 소거 활성이 있음을 확인하였다. 또한, 유자발효물은 scratch-induced wound healing 실험에서 무처리군 대비 세포 이동을 증가시키는 효과를 나타내었다. 유자발효물에서 보습 인자인 필라그린의 생성량이 증가하는 것을 확인하였다. PM₁₀으로 유도된 세포 자극에 대한 미세먼지 차단 효과를 확인한 결과, 유자발효물의 세포 보호 효과를 확인하였다. 이러한 결과를 바탕으로 유자발효물의 다양한 효과가 화장품원료 개발에 대한 과학적 근거를 제공할 수 있을 것으로 사료된다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2021년도 춘계학술대회
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• pp.49-49
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• 2021

The roots of reed (Phragmites australis) were used in traditional medicine to treat respiratory problems, including symptoms such as high fever and cough. In this study, we identified the active ingredient from 70% EtOH reed root extract, and evaluated the whitening, wrinkle improvement and moisturizing effects. The content of p-coumaric acid, the active ingredient of the roots of P. australis, was slightly lower in 70% EtOH extract than in 100% EtOH extract. However, 70% EtOH reed root extract showed similar or higher effect in reducing power, DPPH, hydrogen peroxide scavenging, and nitric oxide scavenging activity compared to 100% EtOH extract. Moreover, 70% EtOH reed root extract markedly inhibited melanogenesis in B16F10 cells treated with α-melanocyte-stimulating hormone. 70% EtOH reed root extract significantly inhibited the mRNA expression of matrix metalloproteinase-1 (MMP-1) and reduced elastase activity in HDF human dermal fibroblasts. In addition, 70% EtOH reed root extract ameliorated hyaluronic acid synthase-2 (HAS-2) expression induced by ultraviolet B (UVB) stimulation in HaCaT keratinocytes. The results of this study suggest that 70% EtOH reed root extract has potential as a functional cosmetic material related to whitening, wrinkle improvement, and moisturizing.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 추계국제학술대회
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• pp.73-73
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• 2020

Toona sinensis (TS) leaf is known to antinociceptive, antioxidative stress and skin moisturizing effects. Acnes vulgaris is a chronic skin disease with various symptoms including itchiness, pain and interruption of normal skin function. Propionibacterium acnes (P. acnes) is a major factor in the occurrence of inflammatory acnes. This study evaluated the antioxidant and anti-inflammation effects by TS extract from adventitious shoots. TS extract showed anti-inflammatory activities by suppression of pro-inflammation mediators (iNOS and COX-2) in LPS-stimulated RAW264.7 cells. TS extract also has anti-inflammatory activities by inhibiting the secretion of pro-inflammatory cytokines on P. acnes-stimulated HaCaT cells. These effects were regulated by MAPK signaling pathway. Therefore, we suggest that TS extract from adventitious shoots might have applications as a medicine for treating P. acnes-induced skin diseases.

• 동의생리병리학회지
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• 제25권3호
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• pp.425-430
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• 2011

This study evaluated the effect of extraction conditions of yam (Dioscorea aimadoimo) on antioxidant, moisturizing, collagenase activity, proliferation, and migration. Yam has been recognized as a healthy food due to its various biological activities, such as anti-obesity, anti-constipation, anti-mutagenic activities, as well as its ability to decrease blood glucose and cholesterol levels. Electron donating ability of high temperature ethanol extract of Dioscorea aimadoimo (HDA) had shown 70.6% at 400 mg/ml, and low temperature ethanol extract of Dioscorea aimadoimo (LDA) had shown 40% at 400 mg/ml. SOD-like activities of LDA and HDA were 23% and 34% at 400 mg/ml respectively. LDA significantly reduced the activity of collagenase in a dose-dependent manner, which was higher than HDA. The water contents in LDA-treated skin and HDA-treated skin were increased by 45.63% and 38.65% than the placebo cream respectively. The cellular proliferation of human dermal fibroblast neonatal (HDFn) was evaluated by MTT and cell migration assay. Compared to control, the cell proliferation was elevated to 109.7% and 114% by the treatment of LDA and HDA respectively at the concentration of 200 mg/ml. In addition, LDA and HDA were induced cell migration in HDFn. Our study suggests that LDA and HDA should be a very useful cosmetic ingredient, as anti-aging and skin moisturizer.

• 대한화장품학회지
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• 제29권2호
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• pp.181-191
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• 2003

This study described about method that form liquid crystal gel (LCG) by main ingredient with hydrogenated lechin (HL) in OW emulsion system. Result of stability test is as following with most suitable LCG's composition. Composition of LCG is as following. To form liquid crystal, an emulsifier used $4.0\;wt\%$ of cetostearyl alcohol (CA) by $4.0\;wt\%$ of HL as a booster, Moisturizers contained $2\;wt\%$ of glycerin and $3.0\;wt\%$ of 1.3-butylene glycol (1,3-BG). Suitable emollients used $3.0\;wt\%$ of cyclomethicone, $3.0\;wt\%$ of isononyl isononanoate (ININ), $3.0\;wt\%$ of cerpric/carprylic triglycerides (CCTG), $3.0\;wt\%$ of macademia nut oil (MNO) in liquid crystal gel formation. On optimum conditions of LCG formation, the pHs were formed all well under acidity or alkalinity conditions. Considering safety of skin, PH was the most suitable $\pm61.0$ ranges. The stable hardness of LCG formation appeared best in $32\;dyne/cm^2.$ Particle of LCG is forming size of $1{\~}20\;{\mu}m$ um range, and confirmed that the most excellent LCG is formed in $1{\~}6\;{\mu}m$ range. According to result that observe shape of LCG with optical or polarization microscope, LCG could was formed, and confirmed that is forming multi-layer lamellar type structure around the LCG. Moisturizing effect measured clinical test about 20 volunteers. As a result, moisturizing effect of LCG compares to placebo cream was increased $30.6\%$. This could predicted that polyol group is appeared the actual state because is adsorbed much to round liquid crystal droplets to multi-lamellar layer's hydrophilic group. It could predicted that polyol group is vast quantity present phase that appear mixed because is adsorbed to round liquid crystal to multi-lamellar layer's hydrophilic group. This LCG formation theory may contribute greatly in cosmetics and pharmacy industry development.

• 감성과학
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• 제15권1호
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• pp.9-16
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• 2012

크림은 피부의 보습효과를 비롯하여 유연기능 등 다양한 목적으로 사용된다. 최근에는 천연향 성분의 크림제품이 출시되면서 그 기능에 관심이 모아지고 있다. 본 연구에서는 곽향, 유향, 백단향, 무향 그리고 새로 개발된 조합향(S6) 5개의 천연향을 대상으로 심리생리적 인체 영향을 평가하였다. 첫 번째로 대전지역에 거주하는 20~30대 여성 100명을 대상으로 감성 형용사를 이용한 주관적 평가를 수행하였다. 그 결과, 조합향을 가장 선호하는 것으로 나타났다. 두 번째로 주관적 평가에 참가한 응답자 중 20명을 대상으로 EEG와 ECG, GSR을 측정하였다. EEG 분석 결과, 각 조건에서 알파파의 비율이 높게 나타나는 것을 확인하였다. 통계적 분석 결과, 조합향에서 유의하게 나타나 긴장완화 효과가 가장 큰 것을 알 수 있었다($p$ < 0.05). 이런 결과는 심전도와 피부전기저항 측정값에서도 동일한 경향으로 나타났다. 세 번째로 조합향 제품을 사용하였을 때 피부상태를 측정하였다. 그 결과 피부 온도와 습도, 피부 움직임 속도가 증가하였다. 보습효과와 탄력 효과가 있음을 확인할 수 있었다.

• 한국의사학회지
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• 제31권2호
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• pp.63-72
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• 2018

As Korea's representative medical text, "Donguibogam" reveals Korean Medicine's unique perspective on the human body. The text also contains abundant resources related to skin, leading to diverse researches on the subject today. In this paper, authors tried to elicit values of "Donguibogam" in the general cosmetics field, through literature review. First, prescriptions related to main functions of modern cosmetics (anti-aging, whitening, and moisturizing) were classified. In relation to anti-aging, concepts such as 返老 (reversing aging), 還童 (to become young again), 皺 (wrinkle), and 皮急 (tense skin) were extracted and 69 examples of treatments were introduced. For whitening care, 41 treatments were mentioned on hyper-pigmentation and general complexion. Concepts related to moisturizing included expressions such as 潤肌膚 (hydration of skin) and 光澤 (glow), induced by 48 treatment prescriptions. Second, cosmetics related prescriptions were classified according to the application methods of modern cosmetics. 78 prescriptions of cleansing category included washing-off local area with herbal liquid, bathing, washing-off after steaming, and soaking the body in the herbal liquid. Total of 308 topical application prescriptions covered the conditions of various skin inflammations, scalp illnesses, and etc. In conclusion, this research examines the value of "Donguibogam" as a useful of skincare. Further studies are expected to extend our understanding of the field.

• 한국응용과학기술학회지
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• 제36권1호
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• pp.113-124
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• 2019

The purpose of the study was to investigate the effects of sea cucumber extract on skin as a natural cosmetics functional material. Subjective evaluation of cosmetics before and after were conducted with questionnaires regarding moisture content, sebum content, melanin index, and erythema index. Experiments were conducted on improvement efficacy using skin clinical trials and questionnaires to evaluate changes in perception of skin condition and efficiency of products. With the aim of minimizing skin irritation, the efficiency of the solvent used for extraction was an important factor, and the sea cucumber extract was harvested with efficient extraction conditions at a ratio of 1:10 of 50% ethanol. The study aimed to identify the suitability of sea cucumber extract as a functional cosmetics material to improve the moisturizing ability of skin and its effect on the skin by adding marine natural animal sea cucumber extract. Clinical studies on cosmetics skin containing sea cucumber extract, excellent skin improvement effect from all items of clinical experiment in experimental and control groups. Sea cucumber extract was proved to be a stable, non-adverse physiologically active substance against abnormal symptoms or side effects of skin reactions and skin problems. In addition, the study found excellent results that can lead to its use as a cosmetics material. This is expected to contribute to the development of various cosmetics industries.

• 대한본초학회지
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• 제22권2호
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• pp.45-50
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• 2007

objectives: We investigated the moisturizing and cooling effects of the cosmetic product with Scrophularia Buergeriana, Poria Cocos, Lonicera Japonica, Portulaca Oleracea and Ginko Biloba extract on human skin by using non-invasive instrument. Methods: We measured physiological effects after volunteers(female, n=5) applied the cosmetic product containing the extract of oriental herbs. The forearm skin moisturization was measured with $Corneometer^{\circledR}$ CM825 after 15min, 3hr, and 6hr. The forearm skin surface roughness was with Scanning electron microscopy after 15min, and 6hr. The face skin temperatures cooling and microcirculation effects were measured with ThermaCAMTM PM525 and LDl-Periscan PlM II after 15min, and 30min. Results: The forearm skin moisturization was imcreased 108% after 15min. The forearm skin surface roughness was decreased significantly after 15min. The face skin temperatures were cooling down to $30.7^{\circ}C$. The face skin microcirculation effect was normalized time-dependently. Conclusions: We concluded that cosmetic product containing the extract of Scrophularia Buergeriana, Poria Cocos, Lonicera Japonica, Portulaca Oleracea and Ginko Biloba had a moisturization effect and improving the surface roughness, temperature and microcirculation on the human skin.