• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.23 no.3
• /
• pp.97-100
• /
• 1997

These days, the raw materials that have the cell recovering effect are used commonly in cosmetics. In this study, six materials were rested for the characteristics of recovering effect both on vivo and in vitro. Tested raw materials were Soypol, 3-APPA, Apple extract, Polygonatum japonicum extract, Scutellarkd baicalensis extract, Aloe extract. Among these materials, Soypol and 3-APPA were synthesized and others were made by extraction at the Pacific R&D Center. Human forearm skin and cultured skin cell were damaged by sodium lauryl sulfare and then raw materials were applied for open treatment on SLS damaged human skin or cells. The recovering effects of raw materials in vivo were evaluated by measuring transepidermal water loss, skin hydration and erythema and in vitro effects of proliferationg cells were assessed by neutral red uptake assay. In the in vivo study, only the evaluation by TEWL showed correlation with the visual score. Our of six materials, 3-APPA had the most positive effect in both in vivo and in vitro studies and the correlation was r=0.8286 (p=0.042).

• Applied Chemistry for Engineering
• /
• v.24 no.6
• /
• pp.639-644
• /
• 2013

In this study, ethosomes loaded with Eucommia ulmoides extracts that have anti-inflammatory and anti-aging activities on the skin were prepared as cosmetic materials. The particle size, physical property, and entrapment efficiency of ethosomes to identify their stabilities during 4 weeks were measured. Ethosomes containing 0.01~0.05% E. ulmoides extracts did not show either precipitation or separation. The mean particle size of these ethosomes was 136.4 nm, and monodisperse. The particle size of ethosome containing 0.05% E. ulmoides extracts was 151.15 nm and the entrapment efficiency was 81.79%. Therefore, in vitro skin permeation experiment was performed with ethosome containing 0.05% E. ulmoides extracts that showed the high loading efficiency and stability during 4 weeks. The order of skin permeation of E. ulmoides extracts was ethosome (77.16%) > liposome (62.80%) > ethanolic solutoin (41.59%). These results suggest that ethosomes containing 0.05% E. ulmoides extracts are effective for the skin permeation and may be used as a cosmetic formulation containing plant extracts.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.33 no.1 s.60
• /
• pp.11-15
• /
• 2007

Oxidation/reduction titrations are important quantitative procedures for many chemicals. Several widely used analytical methods for cosmetic ingredients are based on the redox reactions. In this article, we summarized basic theories of redox titration and applications. Determination of unsaturation properties based on iodine or bromine number, quantitation of hydrogen peroxide or peroxide materials in several cosmetic ingredients and measurement of titanium dioxide, widely used sunscreen agent, in cosmetics are discussed here.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
• /
• v.29 no.2
• /
• pp.73-78
• /
• 2023

The cosmetics industry faces a significant challenge in addressing the decreased recycling rate of cosmetic containers due to the composite materials used to meet consumers' aesthetic satisfaction. To address thees issues, eco-friendly packaging solutions such as refill packaging and single-material use have been developed. However, the market for eco-friendly cosmetics packaging requires a product that meets consumers' demands for aesthetics, sensitivity, and eco-friendliness while also performing as well as existing products. This study presents a solution to the challenge of the decreased recycling rate of cosmetic containers by developing a new cosmetic packaging product for cream formulations. The product features an easily separable and dischargeable internal refill container, while maintaining the design aesthetics of the external container. Through various tests, the product was shown to be of equivalent quality and performance to existing cream cosmetic packaging, with no leakage or defects observed. Furthermore, the use of a single-material polypropylene refill container is expected to contribute to the improvement of the plastic recycling rate.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.28 no.2
• /
• pp.55-57
• /
• 2002

The fabrication, characterization and manipulation of nanosystems brings together physics, chemistry, materials science and biology in an unprecedented way, Phenomena occurring in such systems are fundamental to the workings of electronic devices, but also to living organisms. The ability to fabricate nanostructures is essential in the further development of functional devices that incorporate nanoscale features. Even more essential is the ability to introduce a wide range of chemical and materials flexibility into these structures to build up more complex nanostructures that can ultimately rival biological nanosystems. In this respect, polymers are potentially ideal nanoscale building blocks because of their length scale, well-defined architecture, controlled synthesis, ease of processing and wide range of chemical functionality that can be incorporated. In this presentation, we will look at a number of promising polymer-based nanofabrication strategies that have been developed recently, with an emphasis on those techniques that incorporate nanostructured polymers into devices and that exploit intrinsic polymer properties.

• Polymer(Korea)
• /
• v.32 no.5
• /
• pp.421-426
• /
• 2008

pH-responsive P(MAA-co-EGMA) hydrogel microparticles were synthesized via dispersion photo polymerization and the feasibility of the particles as the cosmetic formulation was investigated. Rh-B and the functional materials for the cosmetic application such as ascorbic acid, adenosine, EGCG, and arbutin were loaded in the P (MAA-co-EGMA) hydrogel microparticles in order to examine the interaction between the hydrogel and the loaded materials. In the loading experiments, Rh-B showed the highest loading efficiency to the P(MAA-co-EGMA) hydrogels due to the electrostatic attraction between the negative charge of the hydrogels and the positive charge of Rh-B at the ionized states. However, the functional materials showed relatively low loading efficiencies because of the electrostatic repulsions between the negative charges of both the hydrogels and the materials at the ionized states. In addition, P(MAA-co-EGMA) hydrogel microparticles showed pH-responsive release behavior of Rh-B according to the external pH changes.

• Journal of Sericultural and Entomological Science
• /
• v.51 no.1
• /
• pp.41-47
• /
• 2013

In this study, silkgland powder of silkworm were investigated to see possibility for cosmetic powder materials. To test possibility as a baby powder cosmetics, total content rate of amino acids, DPPH free radical scavenging assay, MTT assay, and clinical trial were done. According to the result of the analysis of the amino acids of silkgland powder, serin (26.77%) content was the highest and asparatic acid (15.47%), and glycine (9.62%) were followed. DPPH free radical scavenging activity of silkgland powder was lower than vitamin C by 82.3% and 97%, respectively, which is relatively good. And the moisture and elasticity effect were increased in silkgland powder compared to control cosmetics by 210% and 185%, relatively. Thus, these results suggest that silkgland powder of silkworm may have beneficial properties as a material for cosmeceuticals.

• Korean Journal of Pharmacognosy
• /
• v.52 no.2
• /
• pp.92-98
• /
• 2021

Gryllus bimaculatus extract (GbE) have reported that anti-inflammatory activity by suppression of pro-inflammatory cytokines. However, the effects of fermented Gryllus bimaculatus extract (FGbE) have not yet been investigated. In this study, we evaluated the anti-inflammatory and anti-wrinkle effect of the fermented Gryllus bimaculatus extracts using Bacillus subtilis (JB PMB-18) in RAW264.7 cells. Both GbE and FGbE exerted no cytotoxic effects until 1000 ㎍/mL concentration. FGbE decreased NO production and decreased iNOS and COX-2 mRNA levels in a concentration-dependent manner. In addition, the protein production of inflammatory cytokines TNF-α, IL-1β and IL-6 was effectively reduced compared to the GbE. Inhibitory activities of elastase and collagenase associated with skin wrinkle improvement were measured to be 45% and 69%, respectively, at a concentration of 500 ㎍/mL in FGbE. From these results, FGbE can be used as a health functional food and skin functional cosmetic materials for preventing inflammatory diseases because it has excellent anti-inflammatory and anti-wrinkle effects.

• Proceedings of the Korea Environmental Mutagen Society Conference
• /
• 2003.10a
• /
• pp.32-32
• /
• 2003

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.9
• /
• pp.14-19
• /
• 2019

In this study, the possibility of using marine life for cosmetic materials was assessed by establishing a fermentation process of seaweed, such as Ecklonia cava, Enteromorpha prolifera, Chondria crassicaulis, Eiseniabicyclis, Codium fragile, Seaweed furcata, Gloiopeltis tenax, Grateloupia elliptica, Undaria pinnatifida, and Saccharina japonica. Lactobacillus sakei isolated from Kimchi was used for effective fermentation and whole milk powder was used as an additive. 2.0 % of crushed seaweed and 1.0 % of whole milk powder were added and afterwards, 1.0 % Lactobacillus sakei was added after cooling to $40^{\circ}C$. After cooling and filtering the fermented product, butylene glycol, glycerine, and 1,2-hexandiol, which have the effect of a preservative, were added to mix and complete the final product. Among the ten kinds of seaweeds, the process was found to be highly effective in the fermentation of Ecklonia cava, Codium fragile, Undaria pinnatifida, and Saccharina japonica. The amount of fermentable substances in cosmetics was determined and the safety of the raw material was verified using the HET-CAM (The Hen's egg test-Chorioallantoic membrane) test.