• Journal of the Society of Cosmetic Scientists of Korea
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• v.37 no.4
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• pp.297-301
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• 2011

The skin condition after dermatological surgery can be changed. As the laser light penetrates into the skin during the procedure it will activate biomolecules which are the cause of the related redness. In addition, it can parch sensitive skin and worsen itching and flaking. The original intention of 'BB cream' is for soothing sensory skin, but not for make-up. The commonly used 'BB cream' is suitable for all skin types and are targeted specially to those who have sensitive and acne-prone skin. It has the advantages of both skin-care and make-up as it improves the skin condition and evens out the skin tone while providing coverage for redness spots and other blemishes. Our study focuses to give the make-up function that naturally correct the brightness and contrast of redness skin, to realize the skin-care function that is effective against sensitive skin.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.28 no.1
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• pp.202-213
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• 2002

There have been a lot of research going on for developing a new blend of cosmetic ingredients. such as Porous sphere power, High functional composition power, Ultrafine power, UV sunscreen agent, Flat titanium dioxide etc. It's said that these ingredients will have multi functional effects on foundation users. Regarding foundation products. UV care effect is basic and consumers want special feelings for skin and its'transparency. People also look for a high performance foundation which helps skin stay shineless and flawless with a longlasting beautiful finish. A lot of cosmetics are produced in small quantities resulting in a greater variety depending on consumers'ages, hobbies, trends, season and environment, so more specific cosmetics should be developed. To satisfy more specific clientele, It is expected that special care product will come out. Foundations for the elderly and men are already being considered as well as ones for trans-genders are possibility. It's considered that fecundation is not a makeup but something in skin-care categories based on the development and production of high performonce foundations.

• Proceedings of the Korean Society of Near Infrared Spectroscopy Conference
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• 2001.06a
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• pp.3101-3101
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• 2001

Near Infrared spectroscopy (NIR) used on human skin measurement was explored in the past decade. Many publications in different journals and magazines discussed the feasibility of the NIR technique for cosmetic product property studies. Based upon the results of pioneers, we have pursued some work of the NIR instrument coupled with a probe module for skin measurement in vivo and vitro. In part I of this paper, the specific Near Infrared spectroscopy instrument stability, human subject conditions and other parameters, which could affect the measurements reproducibility are discussed. Second derivative NIR spectra and Principle Components Analysis (PCA) are utilised for data interpretation. In part II of this paper, the relationship of human skin moisture and ageing, the gender information and finally, the discovery of penetration depth of NIR incident light on skin are reported. A theoretical penetration depth calculation equation is proposed. In part III, the study results of a couple of commercial skin care products effect will be described. The skin lotions were applied on human skin (in vivo) in order to exam the NIR feasibility to monitor the changes of moisture level. The results are consistently positive. From our primary study, it can conclude that the NIR is potentially a very powerful instrument for skin condition diagnostics, either for cosmetic and/or for medication purposes.

• Journal of the Korean Applied Science and Technology
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• v.36 no.1
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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.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.47 no.1
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• pp.9-21
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• 2021

In this study, the difference between the preservative efficacy test (PET) used for water dispersion formulations and PCPC (personal care products council) guidelines alternative test method, direct contact membrane method, and surface mold test should be studied to determine what should be considered during preservative efficacy test of water non-dispersible formulations. We conducted improved PETs when using the alternative test method compared with the test methods used for stick and pressed powder. There was no significant improvement between water-in-silicon emulsions and loose powder using alternative test methods. When we checked the results of the presence and absence of the preservative system for each product, we could see that there were differences in testing methods. As a result, improved levels of results could be obtained using both existing and alternative test methods when measuring preservatives for water non-dispersible formulations. In addition, in the case of stick and pressed powder, the results were more effective when the preservative test method applied to the consumer's method of use was applied.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.30 no.3 s.47
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• pp.313-320
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• 2004

Human skin is continuously exposed to internal and external influences that may affect its condition and functioning. To maintain and improve skin condition, a wide variety of skin-care products is in the market. However, many of skin problems originate from internal causes, and the new insight into the relation between nutritional factors and skin is now receiving a great attention. Specific positive effects of nutrients or nutraceutical compounds on skin conditions may prove to be biologically relevant and may consequently allow for claims on products containing these compounds, resulting in the development of new functional food for optimal skin condition. In this review, these functions of nutrients and nutraceutical compounds in skin are summarized as providing a basis for the feasibility of the concept of functional foods for maintaining and improving skin condition.

• Journal of the Korean Applied Science and Technology
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• v.26 no.3
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• pp.240-247
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• 2009

The purpose of this study is to develop a method to evaluate solubility parameter interactions of cosmetic ingredients in formulations. This experimentation relates to the fabrication of new multi-layer cleansing oil which can remove make-up products such as lipstick, foundation, mascara, eye shadow, etc., and also can wash away dirt and sebum from the skin just in one stage process. Solubility parameter and specific gravity of various cosmetic ingredients are measured to explain the cleanliness of interface, detergency of make-up cosmetics on the skin surface. The results suggest that it is possible for cosmetic chemists to use solubility parameter of cosmetic materials for fabrication of new formulation of 3-layer cleansing oil.

• Korean Journal of Pharmacognosy
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• v.49 no.3
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• pp.246-254
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• 2018

Pectin lyase-modified red ginseng extract (GS-E3D) is a newly developed ginsenoside Rd-enriched ginseng extract. This study was designed to investigate the skin safety of GS-E3D. Single oral toxicity, single dermal toxicity, bovine corneal opacity and permeability (BCOP) assay, skin irritation test with $SkinEthic^{TM}$ human epidermis model, skin sensitization local lymph node assay, and human patch test, were examined. The oral and dermal $LD_{50}$ value of GS-E3D was over 2,000 mg/kg in rats. GS-E3D was identified as a non-irritant to skin in BCOP assay, human epidermis models, and patch test from the 32 human subjects. The skin sensitization potential of GS-E3D was less than 25% in local lymph node assay. These results indicate that GS-E3D can be used as a safe ingredient without adverse effects in various skin care products.

• Toxicological Research
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• v.31 no.2
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• pp.89-96
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• 2015

Atopic dermatitis is a chronic inflammatory skin condition including severe pruritus, xerosis, visible eczematous skin lesions that mainly begin early in life. Atopic dermatitis exerts a profound impact on the quality of life of patients and their families. The estimated lifetime prevalence of atopic dermatitis has increased 2~3 fold during over the past 30 years, especially in urban areas in industrialized countries, emphasizing the importance of life-style and environment in the pathogenesis of atopic diseases. While the interplay of individual genetic predisposition and environmental factors contribute to the development of atopic dermatitis, the recent increase in the prevalence of atopic dermatitis might be attributed to increased exposure to various environmental factors rather than alterations in human genome. In recent decades, there has been an increasing exposure to chemicals from a variety of sources. In this study, the effects of various environmental chemicals we face in everyday life - air pollutants, contact allergens and skin irritants, ingredients in cosmetics and personal care products, and food additives - on the prevalence and severity of atopic dermatitis are reviewed.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.26 no.2
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• pp.9-12
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• 2000

Certain types of anti-inflammatory components and whitening components were in practical use as the active ingredients of quasi drugs expected to display their pharmacological actions. However, only twenty years at most have past since the introduction of cosmetics that not only physically change the condition of the surface of the skin, but also promote skin homeostasis from by acting on the physiological mechanisms of the skin. Since then, much effort hasa been made to find new active ingredients suitable for full-scale development, and the term "cosmeceutical" has often been coined to describe cosmetics containing pharmacologically active components. In this report, the prospects of cosmeceuticals will be discussed on the basis of a review of the history of the development of current skin-care products.