Skin care efficacy study of recombinant humanized collagen based on in vitro level

Studying the skin care efficacy of recombinant humanized collagen based on in vitro level.The stability of the recombinant humanized collagen was first analyzed by treating at different temperatures,then its skincare efficacy based on in vitro level was evaluated by detecting the inhibition rate of elastase,the inhibition rate of collagenase,the protein content of type I collagen in human fibroblasts,the inhibition of reactive oxygen species(ROS)with human keratinocytes,and the effects of the recombinant humanized collagen on the expression of hyaluronic acid(HA),filaggrin(FLG)and transglutaminase 1(TGM1)in keratinocytes.The results showed that recombinant humanized collagen was able to maintain stability at temperatures below 70℃.With regard to its skincare efficacy,recombinant humanized collagen could inhibit elastase and collagenase activities and promote the increase of type I collagen content in human fibroblasts.It also showed good inhibition of ROS in keratinocytes in vitro and could increase the expression of HA,FLG,and TGM1 in keratinocytes.In short,the recombinant humanized collagen exhibited a favourable skin care effect in vitro level.This study proved that it has potential firming,anti-wrinkle,moisturizing,and repairing efficacy,and is a valuable cosmetic raw material.

Study on Skin Care Efficacy of the Active Ingredients in Camellia Japonica Flowers at High and Low Altitudes

The active ingredients of Camellia japonica flowers(CJF)at high and low altitudes,as well as their skin care efficacy were compared.The dried red CJF at high and low altitudes were ultrasonically extracted with 70%ethanol,and these extracts were concentrated and then diluted to a constant volume.The content of total flavonoids,total polyphenols and total proteins was tested and analyzed.In addition,DPPH free radical scavenging,inhibition of the formation of advanced glycation end products,and inhibitory activity against elastase was measured to compare their skin care efficacy in anti-oxidation,anti-glycation,anti-wrinkling and firming.The results showed that,based on the dry weight of CJF,the content of total flavonoids and total proteins of the CJF at high altitude was approximately 1.5 times of the CJF at low altitude,while the content of total polyphenols was approximately 2.4 times that of the CJF at low altitude.The skin care efficacy of CJF at high altitude was significantly better than that of the CJF at low altitude.This work could provide theoretical basis for the selection and application of Camellia japonica flowers in the field of cosmetics.

Potential Application of a Wine Extract in Skin Care: How to Benefit from the Antibacterial, Antioxidant and Elastase Inhibiting Properties

Since plant polyphenols have many beneficial properties on health, the aim of this study was to evaluate the potential use of a phenolic wine extract, a by-product of wine production, for skin care on HaCaT cells. In these studies, a significant reduction of reactive oxygen species formation in HaCaT cells and severe elastase inhibition was observed. In contrast, the wine extract caused a major increase in lipase activity. The extract showed no influence on cell proliferation, but an immunomodulatory effect on the release of the interleukins IL-6 and IL-8 was found. The phenolic wine extract demonstrated a strong activity against gram-positive and gram-negative pathogens, yeasts, and fungi. Overall, our results show that the investigated phenolic wine extract is a promising ingredient for anti-aging skin care, could contribute to the improvement of skin appearance and health, and may positively affect cellulite.

Effective Skin Care Guidance for Patients with Acne Vulgaris after Standard Treatment

With the introduction of new drugs, the treatment of acne vulgaris has improved dramatically;however, there remains a considerable gap between treatment outcomes and patients’ treatment goals. This study aimed to determine whether dermatologists’ guidance on appropriate skincare for skin symptoms such as post-inflammatory erythema and post-inflammatory hyperpigmentation (PIH), which are not covered by acne treatment, leads to an improvement in patients’ skin condition and patient satisfaction. Japanese women who had completed standard treatment for acne vulgaris and those with mild symptoms not requiring treatment were included in the study. The participants received instructions about skin care at the beginning of the study, which they continued to apply for 6 weeks. At the start and end of the study, participants were examined by a dermatologist;afterward, skin measurements, including skin color, skin surface lipid content, and image analysis by VISIA® Evolution, analysis of stratum corneum obtained from the skin surface, and Skindex-16 questionnaire for assessing quality of life (QOL), were performed. The following showed significant improvements: PIH score, number of inflammatory acne lesions, and number of non-inflammatory acne lesions observed via skin examination;skin surface lipid content and values of L* and a* obtained via instrumental measurement;n number of pore, texture, red spot, and pigmented spot obtained via by image analysis;and degree of multilayer exfoliation and interleukin-1α determined by analysis of epidermal stratum corneum. QOL measurement using Skindex-16 also improved significantly. Appropriate skin care guidance following standard acne vulgaris treatment is helpful in achieving patients’ treatment goals. .

Potential of Natural Killer Cell Enriched Conditioned Media for Skin Care and Anti-Aging

Natural killer (NK) cell is a type of immune cell and is known to be particularly responsible for innate immunity such as anti-cancer immunity, defense mechanisms against infections, and secretion of various cytokines and chemokines for increasing recruitment of other immune cells. In this study, we investigated the potentials of NK-enriched lymphocytes (NKEL) conditioned media (CM) on skin care for cosmeceutical compositions. Various cytokines of NKEL CM can improve wound healing through epithelial-mesenchymal transition (EMT) by increasing KLKs (kallikreins) and reduce metalloproteinase (MMP)-1 and MMP-2 to inhibit wrinkle formation. Our results suggest that NKEL CM which has various cytokines promotes up-regulation of cell migration and KLKs and down-regulation of MMP-1 and MMP-2 by stimulating HaCaT keratinocytes migration. Therefore, NKEL CM can be used as a cosmetic composition that can play a role in skin regeneration and anti-aging.

Acidification of the Skin and Maintenance of the Physiological Skin pH Value by Buffered Skin Care Products Formulated around pH 4

Each biological system possesses a widely unrecognized buffer system to maintain acid-base balance to a specific pH. The skin pH is crucial for physiological skin function. In aged or diseased skin, pH increase is observed and may negatively affect skin health. Skin care products with a pH that is slightly more acidic than the average normal skin pH and have an adequate buffering capacity, are considered beneficial for the skin. However, the buffer capacity of these products also plays an important role. In the present study, a possible normalization or acidification of skin surface pH and influence on skin hydration and skin barrier function was assessed via application of buffered skin care products that are formulated with pH ≤ 4.5. 48 subjects aged above 50 were treated with three different skin care products (Vitamin C Spheres, Collagen Spray, and Collagen Mask) and skin surface pH, skin hydration and barrier integrity were assessed before treatment start and after 4 weeks. The results show that after 4-week treatment with Vitamin C, the skin pH is acidified. Treatment with Collagen Spray and Collagen Mask showed maintenance of a physiological skin pH. Subgroup analysis of subjects that had a higher than average skin pH at study start demonstrated that all three tested skin care products were able to acidify the skin surface. In addition, skin hydration was also increased for two of the three tested products, whereas skin barrier is not significantly changed. This demonstrates that buffered skin care products formulated to a pH ≤ 4.5 are able to acidify and maintain physiological skin pH and may contribute to a physiological skin function.

Evaluation of Epidermal Growth Factor-Incorporating Skin Care Product in Culture Experiment Using Human Fibroblasts

This study aimed to investigate the potential of a skin care product composed of hyaluronic acid (HA) and collagen (Col) sponge containing epidermal growth factor (EGF), vitamin C derivative (VC), glucosylceramide (GC), poly(γ-glutamic acid) (PGA), and argentine (Arg). High-molecular weight HA aqueous solution, hydrolyzed low-molecular weight HA aqueous solution, and heat- denatured Col aqueous solution were mixed, into which each aqueous solution containing EGF, VC, GC, PGA, or Arg were added, followed by freeze-drying to obtain a spongy EGF-incorporating skin care product (EGF-skin care product). In order to evaluate the first efficacy of EGF, fibroblast proliferation was assessed after 6 days of cultivation in the conditioned medium prepared by dissolving EGF-skin care product in a conventional culture medium. The fibroblast densities increased more effectively in conditioned medium with EGF than in control medium without EGF. In order to evaluate the second efficacy of EGF, the amount of vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF) produced by fibroblasts were assessed in a wound surface model. A fibroblast-incorporating Col gel sheet (cultured dermal substitute: CDS) was elevated to the air- medium interface, onto which a spongy sheet of EGF-skin care product was placed and cultured for 7 days. The condition covered with or without EGF-skin care product is divided into (+) EGF or (-) EGF, respectively. Fibroblasts in the CDS released 3.7 times more VEGF and 25 times more HGF in (+) EGF compared with (-) EGF. In another experiment, an aqueous solution of EGF-skin care product was added onto CDS and cultured for 7 days. Aqueous solutions were prepared and stored at 4°C or 37°C for a different period of 1 day, 2 weeks, and 4 weeks, respectively. Fibroblasts in CDS under different condition released similar amount of VEGF and HGF. This result indicated that the efficacy of EGF was maintained even after preservation at 37°C for 4 weeks. These findings suggest that EGF-skin care product can be used on damaged skin surface by placing its spongy sheet or its solution.

Control effect of structured skin care plan of integrated Chinese and Western medicine in elderly patients with incontinence-associated dermatitis

Objective:The objective of this study is to explore the clinical effects of structured skin care plan of integrated Chinese and Western medicine in intervening elderly patients with incontinence-associated dermatitis(IAD).Materials and Methods:Totally,66 elderly patients with IAD were randomly divided into the experiment group(32 cases)and control group(34 cases).The control group was given routine nursing care,while the experiment group was given a structured skin care plan.The observational course was 2 weeks.The treatment efficiency and healing time were compared between the two groups.Results:After 2-week intervention,the total effective rate of the experiment group was higher than that of the control group(97.1%vs.78.1%,X^(2)=3.913,P=0.048).The skin assessment tool score of the experiment group was lower than that of the control group(0.56±1.58 vs.1.75±2.46,Z=−−2.401,P=0.016).The healing time of the experiment group was shorter than that of the control group(7.29±4.76 days vs.10.69±6.36 days,Z=−2.280,P=0.026).Conclusion:The structured skin care plan of integrated Chinese and Western medicine showed a good effect in elderly IAD patients,and provided a reference for clinical treatment and care of elderly patients with IAD.

Jinhehuan Health and Skin Care Product

Jinhehuan (sponge tree) is a kind of rare plant growing on the Tianshan mountain in the Xinjiang region of China, the red pigment of which is good for cooling and activating the blood, having antipyretic, detoxified, antibacterial and antiphlogistic functions. Experts at the Research Institute of Phytology under the Academia Sinica have found that this kind of pigment has a strong

Tinhehuan Health and Skin Care Product

Jinhehuan(sponge tree)is a kind ofrare plant growing on the Tianshanmountain in the Xinjiang region of China,the red pigment of which is good forcooling and activating the blood, havingantipyretic, detoxified, antibacterial andantiphlogistic functions. Experts at theResearch Institute of Phytology under theAcademia Sinica have found that thiskind of pigment has a strong

Research and Development Procedures of Chinese Herbal-medicine Skin Care Products with Chinese Characteristics

As far as Chinese herbal medicine resources are concerned,China is one of the countries with the richest biodiversity in the world.As for the future development direction of Chinese skin care products,the development of special Chinese herbal skin care products is an important issue.The technical route for the research and development(R&D)of Chinese herbal-medicine skin care products should focus on“combining ancient and modern,combining Chinese and Western”,that is to say combining the ancient knowledge and wisdom with modern science and technology,and combining Chinese traditional therapy with western pharmacology.This article will elaborate the five stages of developing innovative Chinese herbal skin care products:pondering and thinking stage;extraction and purification stage;experimental evaluation stage;quality index establishment stage;product development stage.The key points of these five stages can provide a reference for the cosmetics R&D personnel.This project will be beneficial to the development of Chinese herbal-medicine skin care products and the formulation of an overall effective development strategy,which is helpful to actively respond to new challenges and continuously improve product competitiveness,so as to vigorously build a world-renowned high-end cosmetic brand in China,and strive to cultivate a world-class cosmetics talent team.

Investigation on the Effect of the Cultivation of Consumers'Scientific and Technological Concept on the Sales of Skin Care Products

The number of skin care products developed scientifically and technologically is increasing in the market now.Whether it is a gimmick or a real desire to make a good product,companies are actively promoting the development and growth of the technological skin care market.The analysis of our market survey indicates that companies and consumers generally show a trend of mutual progress along with the market growth of technological skincare.Companies and consumers alternately play a leading role in different stages of progress.In this survey study,consumers were divided into four types:minimalist consumers,trendy consumers,ingredient-based consumers,and technological consumers.A series of comparative analyses for these four groups showed that consumers have the trend to instinctively develop from minimalist to technological consumer.Along with the increase of skin care knowledges,consumers can more trust and be more willing to buy the technology-based skin care products.For those ones who has no experiences with the technology-based skin care products,after gaining skincare knowledges,they are also willing to try.This is a good signal for companies.While helping with consumers being more knowledgeable in skincare,companies can lead consumers to learn about their researches and products development,which will benefit the market acceptance of the products.Users can also benefit from gaining more relevant knowledges.With these knowledges,consumers can be clearer about their own needs,more rational on skincare purchasing,and they can select the correct skincare.

Treatment of Aged Skin with a pH 4 Skin Care Product Normalizes Increased Skin Surface pH and Improves Barrier Function: Results of a Pilot Study

The physiological skin surface pH is just below 5. With age the skin surface pH increases up to 6. An increased pH correlates with reduced barrier integrity/cohesion. The present pilot study assesses possible normalization of an increased skin surface pH of the elderly and improvement of barrier function via application of ≈pH 4.0 skin care products. Baseline skin surface pH was determined in elderly (80+ years old;n = 15) compared to middle aged adults (31 - 50 years old;n = 15). The effect of o/w emulsions at pH-values of 3.5, 4.0, 4.5 and 5.5 on the skin surface pH was determined in both groups. Further, the effect of a 4-week treatment with a pH 4.0 skin care product on the skin surface pH, skin hydration and barrier integrity was assessed. Thirteen elderly females were involved in this home-in-use test. Increased baseline skin surface pH of the elderly normalizes to the physiological pH of 4.5 - 5.0 over 7 hours after single application of o/w-emulsions with a given pH of 3.5 or 4.0. A 4 week treatment employing the pH 4.0 skin care product improves the epidermal barrier integrity of the elderly significantly (p = 0.005). Reduction of the increased baseline skin surface pH of the elderly is accompanied by improved epidermal barrier integrity. Skin care products for the elderly have to be adjusted in the pH range of 3.5 to 4.0.

Development of a Freeze-Dried Skin Care Product Composed of Hyaluronic Acid and Poly(γ-Glutamic Acid) Containing Bioactive Components for Application after Chemical Peels

Eight types of spongy sheet were prepared by freeze-drying aqueous solutions of hyaluronic acid (HA) and poly(γ-glutamic acid) (PGA) with or without bioactive components including vitamin C derivative (VC), glucosylceramide (GC), and epidermal growth factor (EGF). Spongy sheets were categorized into the following groups: Group I (HA/PGA), Group II (HA/PGA + VC), Group III (HA/PGA + GC), Group IV (HA/PGA + VC, GC), Group V (HA/PGA + EGF), Group VI (HA/PGA + VC, EGF), Group VII (HA/PGA + GC, EGF), and Group VIII (HA/PGA + VC, GC, EGF). In the first experiment, we examined fibroblast proliferation in conditioned medium that had been prepared by immersing each spongy sheet in a conventional culture medium. EGF-incorporating spongy sheets (Groups V-VIII) enhanced fibroblast proliferation more than EGF-free spongy sheets (Groups I-IV). In the second experiment, cytokine production by fibroblasts was evaluated using a wound surface model. This involved elevation of fibroblasts-incorporating collagen gel sheets to the air-liquid interface, on which a spongy sheet (Groups I, IV, V and VIII) was placed and cultured for 1 week. EGF-incorporating spongy sheets (Groups V and VIII) enhanced the production of vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF) by fibroblasts more than EGF-free spongy sheets (Groups I and IV). The effect of these four types of spongy sheet on wounds was investigated in animal experiments. Chemical peel was performed by contacting 50% trichloroacetic acid (TCA) on the dorsal region of mice, after which a spongy sheet was placed, and the wound condition was then observed in a two-week period. Angiogenesis was facilitated to a greater degree in Group VIII compared with Groups I, IV and V. This finding indicates that Group VIII spongy sheet is a promising aid for skin recovery after chemical peel.

Sensitive skin syndrome: Research progress on mechanisms and applications

Sensitive skin is a clinical syndrome characterized by a hyper-reactive state of the skin,primarily on the face.It is accompanied by subjective symptoms such as burning,stinging,itching,and tightness when exposed to physical,chemical,or psychological stimuli.Objective signs,such as erythema,scales,and dilated blood vessels,may or may not be present.The discomfort associated with sensitive skin can be triggered by various endogenous and exogenous factors,which usually have no significant effect on the individual and do not induce irritant reactions.Sensitive skin often presents as a subjective state without clinical signs and exhibits diversity,posing challenges in sensitive skin research and care.This review summarizes the prevalence,key factors,pathophysiological mechanisms,diagnosis,and progress in daily care for sensitive skin.The aim is to provide a clearer and more systematic understanding of sensitive skin and offer guidance for sensitive skin care.

The Empiric Use of Palm Kernel Oil in Neonatal Skin Care:Justifiable or Not?

Palm kernel oil is a vegetable oil derived from Elaeis guineensis and widely used in neonatal settings for skin care. It is a good emollient with a beneficial effect in moisturizing the skin and preventing transdermal heat and water loss. However, it＇s putative roles in the prevention or treatment of fatty acid deficiency is still controversial. So is its function in the improvement of neurological development from its long- chain polyunsaturated fatty acids？ We set out in this review to verify whether its empiric use in this context has any scientific justification and is recommendable. Although there is evidence that it has emollient and moisturizing properties necessary for softening the skin and restoring elasticity, controversy subsists on its other nutritional and neurodevelopmental properties.

Clinical Evaluation of Novel Natural Polysaccharides Sacran as a Skincare Material for Atopic Dermatitis Patients

Atopic dermatitis is a skin disease characterized by inflammation, pruritus, and chronic or relapsing eczematous lesions. Recently, ampholytic polysaccharide sacran has attracted a particular focus of attention as a novel biomaterial. In the present study, we investigated the effect of sacran solution on atopic dermatitis in the clinical study. Almost all of the average scores for atopic dermatitis symptoms of each patient treated with sacran solutions were improved. In addition, the scores of sleep disorder and itching were also significantly ameliorated by the sacran treatment for 4 weeks, compared with those of initial states. In immatured dermal skin model stimulated with 2,4-dinitrofluorobenzene (DNFB), the sacran treatment markedly down-regulated inflammatory cytokine and chemokine mRNA levels such as MCP-1, TNF-α, IL-1β, and IL-6 mRNAs, compared with that of DNFB alone. Furthermore, a sacran solution significantly suppressed the mRNA expression of TNF-α and COX-2 in RAW264.7 cells, a murine macrophage-like cell line, stimulated with phorbol-12-myristate-13-acetate (PMA). In RBL-2H3 cells, a rat basophilic leukemia cell line, a sacran solution significantly lowered β-hexosaminidase release, indicating the suppression of allergic response. These results suggest that a sacran solution may have the potential to improve atopic dermatitis through the impairment of production of inflammatory cytokine and chemokine mRNA.

Study on the Efficacy of Men’s Facial Skin Cleaning and Care Cosmetics

This paper has provided references for the evaluation of men’s facial skin cleanness and efficacy through the research on the cleanness of a men’s facial cleanser,the oil-controlling,moisturizing and brightening effects of a men’s skin lotion,and the people’s usage experience.The results showed that the skin grease and the liquid foundation could be effectively cleaned after using a facial cleanser.After using the lotion for 2 weeks,the oil content was significantly different from that before and in the blank group,showing a rapid oil control effect.Excellent moisturizing effect could last until 4 weeks.There was a significant difference in the change value of skin transdermal water loss rate,indicating that the skin barrier was improved to some extent.There was remarkable effect of skin glossiness after 4 weeks of continual use compared with the blank group.The subjects’overall satisfaction with the skin after using the lotion was 86.7%through self-assessment.

Evaluation of the Skin Irritation and Sensitization Potential of the Cussons Baby Sensicare Skin Range of Products in Healthy Volunteers

Introduction: The Cussons Baby Sensicare Range is a newly developed set of products specially formulated for newborn, sensitive and eczema prone skin. As such, these products need to be tested to evaluate their skin irritation and sensitization potential before use. The products were evaluated with two separate tests. The first test was conducted in a single-center, within-subject comparison using assessor-blind, randomised human skin irritation patch test (48 hour/96 hour exposure) and conducted on healthy adults with sensitive, atopic skin. The second test was conducted in a single-center, controlled (sterile water), within subject using human repeat-insult patch tests (HRIPTs) and conducted on healthy female Indonesian and Asian adult female subjects, with sensitive skin. The sensitization potential of each product was determined from International Contact Dermatitis Research Group (ICDRG) scores at 30 minutes, 24 hours, 48 hours and 72 hours after patch removal. Skin irritation tests show that all products were significantly lower than the positive control sodium lauryl sulphate (SLS) (p < 0.05) but not significantly different to the negative control (sterile water) in terms of irritation scores at the respective time points. HRIPTs results show that Cussons Baby Sensicare Range was non-sensitizing. As such, it can be concluded that the Cussons Baby Sensicare Range tested is well tolerated on skin and has low skin irritation and sensitization potential. Thus, they can be considered hypoallergenic on sensitive skin and suitable for eczema prone skin.

创伤性伤口患者居家带伤洗浴方案的构建与初步验证研究

背景创伤是一种发生率高、耗费大的全球性健康问题,预防和控制感染是创伤性伤口处理的一大挑战,而创伤后长时间不进行皮肤清洗在影响舒适度的同时也增加伤口感染的发生率。尽管很多患者创伤后有洗浴的意愿,然而何时洗浴、如何洗浴尚不明确,因此,构建适宜的带伤洗浴方案对保持皮肤和伤口清洁十分必要。目的构建适合我国创伤性伤口患者使用的居家带伤洗浴方案,为保持创伤患者的皮肤清洁、改善伤口愈合结局提供可行的护理方案。方法检索国内外数据库获取原始文献,通过循证分析、归纳、小组讨论,形成创伤性伤口患者居家带伤洗浴方案的条目初稿。纳入15名副高职称以上的伤口护理专家,采用德尔菲专家函询法修改和完善带伤洗浴方案,每轮函询间隔1周,采用专家积极系数和权威系数评价函询结果的可靠性,采用变异系数评价函询结果的一致性,当变异系数<0.25时表示专家意见趋于一致,停止函询,形成修改稿。纳入门诊创伤性伤口患者30例进行预试验,采用Likert 5级评分验证带伤洗浴方案的便利性、安全性和患者依从性,讨论修改后形成最终方案。结果纳入23篇相关文献,循证分析、讨论后形成了“洗浴前准备”“洗浴操作”“洗浴后处理”3个一级条目、7个二级条目、9个三级条目和4个四级条目的创伤性伤口患者居家带伤洗浴方案初稿。15位专家进行2轮函询后意见趋于一致,两轮问卷回收率分别为93.75%和100.00%,权威系数分别为0.947和0.957。第一轮各条目重要性和可操作性变异系数分别为0~0.25、0~0.23,第二轮各条目重要性和可操作性变异系数分别为0.09~0.18、0.07~0.14,共删除条目2个,修改条目5个,新增条目2个,形成了修改稿。预试验验证结果:30例创伤性伤口患者依从洗浴方案每周洗浴(2.70±0.47)次,每次洗浴时间10~15 min,便利性评分(4.67±0.48)分,依从性评分(4.70±0.47)分,未发生与洗浴有关的不良事件及洗浴有关的伤口感染。预试验证明洗浴方案安全可靠、简单便利,患者依从性好,最终形成包括3个一级条目、8个二级条目、9个三级条目和3个四级条目的创伤性伤口患者居家带伤洗浴方案终稿。结论本研究构建创伤性伤口患者居家带伤洗浴方案过程中,专家积极系数和权威系数高,获得了函询专家的一致认可。预试验中30例创伤性伤口患者的依从性高,带伤洗浴方案安全、便利,可用于我国创伤性伤口患者居家带伤洗浴。