Analytical Methods for Quality Control in Cosmetics

A special issue of Cosmetics (ISSN 2079-9284).

Deadline for manuscript submissions: closed (28 July 2023) | Viewed by 7595

Special Issue Editors

GICAPC Research Group, Departamento of Analytical Chemistry, University of Valencia, Burjassot, Valencia, Spain
Interests: analytical chemistry; sample preparation; extraction techniques; miniaturization; liquid chromatography; gas chromatography; mass spectrometry; quality control
Special Issues, Collections and Topics in MDPI journals
GICAPC Research Group, Department of Analytical Chemistry, University of Valencia, Burjassot, Spain
Interests: microextraction; sample preparation; nanomaterials; chromatography; bioanalysis

Special Issue Information

Dear Colleagues,

The constant evolution of the cosmetic industry makes necessary to continuously develop analytical methods adapted to the requirements of companies in quality control of cosmetic products and raw materials, in order to guarantee safety of consumers. As far as possible, these analytical methods should be fast, simple, affordable, and safe, to offer companies, authorized laboratories and health authorities an ideal way to carry out product quality control, taking into account the type of analysis and the analytical instrumentation available.

Although there are official methods of analysis for use in many countries, states, or communities, they do not fully cover the needs of the cosmetic industry due to the large number of potential ingredients and contaminants, and the huge variety of cosmetic formulations. Furthermore, some of the existing methods need to be modernized in accordance with the new scientific advances in the field of the Analytical Chemistry and the Green Sample Preparation.

The aim of this special issue is to provide a collection of articles regarding the development and validation of new accurate analytical methods with the required characteristics for quality control of cosmetic products.

Dr. Juan Benedé
Dr. José Grau
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Cosmetics is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cosmetic products and raw materials
  • safety and quality control
  • high added-value ingredients
  • preservatives and antioxidants
  • sample preparation
  • extraction techniques
  • chromatography
  • mass spectrometry
  • UV/Vis spectrometry
  • green analytical chemistry

Published Papers (3 papers)

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Research

13 pages, 3166 KiB  
Article
The Method of Studying Cosmetic Creams Based on the Principles of Systems Theory and Mathematical Modeling Techniques
by Adela Manea, Delia Perju and Andra Tămaș
Cosmetics 2023, 10(5), 118; https://doi.org/10.3390/cosmetics10050118 - 23 Aug 2023
Viewed by 1376
Abstract
This paper reviews research on some cosmetic creams considered “distributed parameters systems” and on the experimental-computational mathematical models that have been determined for them. The determined models characterize the cosmetic creams in all stages of the manufacturing process, starting with the development of [...] Read more.
This paper reviews research on some cosmetic creams considered “distributed parameters systems” and on the experimental-computational mathematical models that have been determined for them. The determined models characterize the cosmetic creams in all stages of the manufacturing process, starting with the development of recipes, the description of raw materials, manufacturing technologies, and the determination of the physico-chemical and microbiological indicators that most strongly influence their quality. This approach suggests the possibility of performing optimization operations, specifically sensitivity analyses, which may lead to the identification of best quality indicators and to the amelioration of negative effects related to disturbance sizes (temperature, pressure, humidity etc.). Five emulsions with different compositions, prepared in vitro according to our own recipes, using raw materials and preparation methods approved for cosmetic products, were studied. Through specific physico-chemical and microbiological analyses, we obtained databases that were processed computationally. The resulting mathematical models, in the form of both graphs and equations, led to important conclusions regarding obtaining high quality in the studied creams and to the confirmation of the usefulness of applying the principles of Systems Theory to the study of cosmetic products. Full article
(This article belongs to the Special Issue Analytical Methods for Quality Control in Cosmetics)
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19 pages, 3520 KiB  
Article
Optimization of a Gas Chromatography–Mass Spectrometry (GCMS) Method for Detecting 28 Allergens in Various Personal Care Products
by Adnan S. AL-Mussallam, Abdullah T. Bawazir, Rawan S. Alshathri, Omniyah Alharthi and Fahad S. Aldawsari
Cosmetics 2023, 10(3), 91; https://doi.org/10.3390/cosmetics10030091 - 14 Jun 2023
Cited by 1 | Viewed by 2944
Abstract
Fragrances are among the most common ingredients in cosmetics products. Importantly, exposure to fragrances on a daily basis might pose a health risk, leading to serious effects, such as contact dermatitis or contact eczema. Annex III of the European Union Directive on Cosmetic [...] Read more.
Fragrances are among the most common ingredients in cosmetics products. Importantly, exposure to fragrances on a daily basis might pose a health risk, leading to serious effects, such as contact dermatitis or contact eczema. Annex III of the European Union Directive on Cosmetic Products and Gulf Cooperation Council standardization organization (GSO) introduced restrictions for 26 allergens, with their concentrations exceeding 0.001% and 0.01% in leave-on products and rinse-off products, respectively. In the current study, we aimed to expand the scope of the analytical method (EN16274, 2012) to include a broader range of matrices. The optimized method was validated by examining a statistical approach, including selectivity, linearity, accuracy, precision, and measurement of uncertainty. Successfully, the validated data demonstrated acceptable limits according to validation protocols, with linearity showing satisfactory regression of r > 0.995. During method performance assessment, samples were extracted using ultrasound-assisted extraction to extract allergens that yielded relatively high recoveries. Studies on matrices spiked with allergens at different levels showed insignificant bias as an average of 0.07 µg/g. Method performance was assessed by analyzing 140 cosmetics samples, including perfumes, deodorants, aftershave, baby wet wipes, shampoos, lotions, and lip care products. The new optimized analytical method is believed to be a valuable analytical tool to be used in surveillance studies covering a wide range of cosmetic matrices. Full article
(This article belongs to the Special Issue Analytical Methods for Quality Control in Cosmetics)
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16 pages, 1990 KiB  
Article
Comparison of Analytical Methods for the Detection of Residual Crosslinker in Hyaluronic Acid Hydrogel Films
by Fatimah Rashid, Stephen Childs and Kalliopi Dodou
Cosmetics 2023, 10(3), 70; https://doi.org/10.3390/cosmetics10030070 - 26 Apr 2023
Viewed by 2572
Abstract
Cosmetic skincare products often consist of residual chemical ingredients which are by-products of the manufacturing process that may cause side effects such as skin irritation or allergic dermatitis; investigating the safety of these products to protect the consumer is an important part in [...] Read more.
Cosmetic skincare products often consist of residual chemical ingredients which are by-products of the manufacturing process that may cause side effects such as skin irritation or allergic dermatitis; investigating the safety of these products to protect the consumer is an important part in the quality control of formulations intended for skin application. Acrylates are a type of polymer widely used in pharmaceutical and cosmetic applications as copolymers, emulsifiers, and cross-linkers. Due to the acrylates being strong skin irritants and sensitizers, it is essential to quantify the levels of residual acrylate monomers in the formulation; these levels must be within the accepted value to be safe. Our previously reported novel hyaluronic acid (HA) hydrogel films were formulated using pentaerythritol tetraacrylate (PT) as the crosslinker. Therefore, it was crucial to analyze the residual PT in these hydrogel films. Gas chromatography (GC) and nuclear magnetic resonance (NMR) spectroscopy were used as analytical methods to detect the residual PT monomers in the HA hydrogel samples. Scanning electron microscopy (SEM) was conducted to investigate structural changes due to the PT monomers leaching out from the HA hydrogel films. The results from the GC method validation (linearity R² > 0.99, RSD for intra-day precision = 1.78%, inter-day precision = 2.52%, %recovery = 101.73%, %RSD = 1.59% for robustness, LOD, LOQ values 0.000032% m/m, 0.00013% m/m for sensitivity) revealed its suitability for such studies. NMR analysis results agreed with the GC results confirming the correct quantification of the extracted residual acrylate monomer. The maximum safe concentration of PT crosslinker in the formulation was determined to be 2.55% m/m. Full article
(This article belongs to the Special Issue Analytical Methods for Quality Control in Cosmetics)
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