中和剂对化妆品中霉菌和酵母菌检测结果的影响

目的探讨卵磷脂和吐温80作为中和剂对化妆品中霉菌和酵母菌检测结果的影响。方法使用虎红培养基和添加中和剂卵磷脂和吐温80的虎红培养基检测市售化妆品和经黑曲霉、白色念珠菌加标的化妆品的霉菌和酵母菌。结果用虎红培养基和卵磷脂、吐温80-虎红培养基分别检测市售化妆品,均未检出黑曲霉、白色念珠菌;检测黑曲霉加标化妆品,添加中和剂后,菌落数增加,差异有统计学意义(t=5.24,P0.05);检测白色念珠菌加标化妆品,添加中和剂后,菌落数增加,差异有统计学意义(t=3.185,P0.05)。结论卵磷脂和吐温80作为中和剂对化妆品中霉菌和酵母菌的检测结果有影响,可提高其检出结果。建议在化妆品检测标准方法中采用添加中和剂的培养基检测霉菌和酵母菌。     

Potential of microalgal compounds in trending natural cosmetics: A review

Microalgae are photosynthetic organisms that produce valuable metabolites as a result of being constantly exposed to stress conditions such as high or low temperature, high salinity, osmotic pressure, photo-oxidation, and ultraviolet radiation. These valuable metabolites drew attention from cosmetic and cosmeceutical industries to be used in anti-aging, sunscreen, and skin whitening products. Microalgal secondary metabolites can have anti-blemish or anti-microbial effect; can also repair and heal skin, protect skin from UV damage, and prevent inflammation. Existing cosmetic products can be replaced by microalgae derived cosmetic products which are environment-friendly and safe which make them publicly important since people want to have products as natural as possible. Currently some microalgal derived products are commercially available and biotechnology of microalgae is getting more and more developed every day which will be resulted in more commercial products in short period of time. This review highlights the potential of microalgae species and, bioactive molecules derived by them in trending natural cosmetics with a special emphasis on application areas and production steps.     

232例化妆品变应性接触性皮炎患者斑贴试验结果回顾性分析

目的分析232例化妆品变应性接触性皮炎患者斑贴试验结果及临床资料。方法应用标准化妆品斑贴试剂盒检测2018年1月～2020年3月我科232例诊断化妆品变应性接触性皮炎患者的过敏原,分析致敏原及不同致敏部位临床表现之间关联。结果斑贴试验结果显示183例呈现阳性反应,阳性率为78.88%,面部过敏及一般护肤类化妆品引起的过敏最为多见。居前8位的致敏原依次为:甲基异噻唑啉酮、CL+Me-异噻唑、山梨糖醇酐倍半油酸酯、虫胶、硫柳汞、叔丁基氢醌、山梨坦油酸酯和没食子酸辛酯,强阳性反应例数居前两位的是甲基异噻唑啉酮和CL+Me-异噻唑。结论化妆品中防腐剂、乳化剂、抗氧化剂、抗菌剂、香料类等是主要的变应原,斑贴试验可以给过敏人群提供购买化妆品的可靠参考。     

Determination of toxic element levels (lead and cadmium) in commonly used cosmetic products in Iran

Toxic elements are commonly used in cosmetic products for many reasons like coloring pigments or blocking ultraviolet light; however, the level of some metals exceed specific concentration which can cause serious safety issues. This study aims to evaluate the content of lead and cadmium in samples of sunscreen and foundation creams, most frequently used brands of cosmetic products, in Iran. Concentration of lead in the sunscreens and foundation creams was lower than that of USFDA standards. The content of cadmium was higher than Europe Union standard. Effort must be made to inform the users about the harmful consequences of cosmetics.     

重组人皮肤模型在化妆品皮肤刺激性评价中的应用研究

目的 探讨重组人皮肤模型应用于化妆品体外皮肤刺激性评价的可行性.方法 以重组人皮肤模型(EpiSkinTM)为受试模型,在对10个已知刺激性分类的标准化学品进行方法验证的基础上,再根据化妆品的使用特性对23个产品进行皮肤刺激性分类评价,其中6个基础型化妆品和10个美容型化妆品暴露18 h、7个清洁型化妆品分别暴露18、...     

Determination of cannabinoids in hemp oil based cosmetic products by LC-tandem MS

Cosmetic products containing hemp seed oil as permitted raw materials required the specific compound delta-9-tetrahydrocannabinol (THC) below 10 μg/g. THC was the main psychoactive constituent of cannabis. Since hemp seed oil became an increasingly popular ingredient in cosmetics over the last few years, an efficient and reliable analytical method for THC and other cannabinoids in cannabis-infused cosmetic products was in need. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of delta-9-tetrahydrocannabinol (THC), cannabidiol (CBD), and cannabinol (CBN) in hemp seed oil based cosmetic products was developed. Method validation was performed by fertilizing blank samples with analytes and internal standards (THC-d₃, CBD-d₃, and CBN-d₃). Chromatographic method utilized a Xbridge BEH Shield RP18 column with gradient elution containing 10 mM ammonium formate in water and methanol provided successful separation of THC, CBD, and CBN in cosmetic matrix. The combination of MS detection in positive electrospray ionization (ESI) and multiple reaction monitoring (MRM) mode offered rapid run time 13 minutes with limit of quantification (LOQ) of 0.05 μg/g. The intra- and inter-day recoveries were 79.23–114.04% and 83.55–111.61% with spiking levels ranged between 0.05 μg/g and 0.5 μg/g, respectively. Surveillance results of 90 cosmetic products showed 22, 34, and 5 products containing THC (0.06–1777 μg/g), CBD (0.47–37217 μg/g), and CBN (2.2–25.2 μg/g), respectively. This validated method offered accurate, reliable, and fast way for the determination of drug contaminations including THC, CBD, and CBN in cosmetics. The surveillance results for commercial cosmetic products purchased in Taiwan between 2018–2020 provided valuable background references for THC, CBD, and CBN in hemp seed oil based cosmetic products, and could be used for administration purpose.     

Determination of polycyclic aromatic hydrocarbons (PAHs) in cosmetic products by gas chromatography-tandem mass spectrometry

A gas chromatography coupled with tandem mass spectrometry (GC-MS/MS) method is developed to determine 18 representative polycyclic aromatic hydrocarbons (PAHs) in cosmetics, including Benzo[a]pyrene (BaP) and others. The method offers high sensitivity and selectivity under selected reaction monitoring (SRM) mode to satisfy the requirements of both quantitation and qualitation. The extraction solvent system used in this study is acetone/hexane 1:1 (v/v) and other purification procedure is unnecessary. The linearities of 18 PAHs are validated in different concentration in the range of 0.25–20 ng/mL individually with coefficient correlation (r) higher than 0.996. The recoveries for spiking 3 different concentrations are from 87.40% to 120.44% for 18 PAHs and the coefficient of variation (CV) are below 12.32%. Limit of quantification (LOQ) of 18 PAHs is in the range of 0.05–0.2 mg/kg. A matrix enhancement effect is observed and can be compensated with deuterated internal standard. The method has been successfully applied to 73 samples, over 40 of them are lipsticks. The results show none of the samples detect Benzo[a]pyrene (BaP) and Dibenzo[a,h]anthracene (DBA), both are classified as the most carcinogenic. 8 PAHs are detected and the average value between 0.08 and 0.27 mg/kg. This study offers a sensitive and simple method to analyze 18 representative PAHs successfully and can be applied to cosmetic products and raw materials.     

双道原子荧光法测定食品和化妆品及饮用水中砷和汞

目的建立一种快速消解并同时测定食品、化妆品、水;砷和汞的方法.方法食品、化妆品采用微波消解,水采用溴酸钾-溴化钾消解,双道氢化物发生原子荧光法同时测定样品中砷和汞. 结果方法检出限砷和汞分别为0.13、0.043μg/L,平均回收率分别为103.4%、94.4%,相对标准偏差分别为1.86%、3.20%. 结论方法简便,快捷,准确,灵敏度高,应用双道氢化物发生原子荧光法可同时测定食品、化妆品、水中砷和汞含量.     

Evaluation of cosmetic product exposures reported to the Milan Poison Control Centre,Italy from 2005 to 2010

Introduction. To the average consumer, “cosmetics” are not considered to cause damage to human health under normal conditions of use. Thus, cosmetic “safety” does not require any particular attention to the possibility that cosmetics may result in a toxic exposure, especially for children. Poison Control Centres (PCCs) provide specialized and rapid information for consumers and health professionals to ensure management of events related to the exposures to different agents, including Cosmetics. Poison Control Centres also represent a unique source of information to investigate the frequency and type of exposures to cosmetic and the related risks. Objective. An analysis of cases concerning human exposures to cosmetics collected from 2005 to 2010 by the PCC at the Ospedale Niguarda Ca’ Granda (Milan, Italy) was performed. Results. During this period, 11 322 human exposure cases related to cosmetics were collected accounting for 4.5% of the total human clinical cases. Almost, all the requests for assistance came from consumers (53%) and hospitals (40%). The most frequently reported site of exposure was the consumer's own residence (94%). The exposures mainly involved children younger than 4 years (77%). No difference in gender distribution was observed (female 49%, male 51%). Almost, all of the exposures were unintentional (94%). Intentional exposures, mainly related to suicide attempts and accounted for 6% of cases involving persons aged more than 12 years. Personal hygiene products (30%), perfumes and hair care products (excluding hair dyes) (both 13%) were the most frequently involved categories. Symptoms were present only in 26% of the exposures and were mostly gastrointestinal (46%). Most of the cases were managed at home (43%) whereas hospital intervention was required in 38%. Conclusion. Since the exposure frequency seems more likely to reflect product availability and accessibility to ingestors, our results call for closer attention to this type of hazard, especially for children younger than 4 years of age.