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Cosmetics
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What Do You Know about Cosmetics?
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What Do You Know about Cosmetics?

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

Deadline for manuscript submissions: closed (19 December 2014) | Viewed by 46037

Special Issue Editor

Prof. Dr. Enzo Berardesca

E-Mail Website
Guest Editor
Department of Dermatology and Cutaneous Surgery, University of Miami, Miami, FL 33136, USA
Interests: dermatology; skin care; contact dermatitis; cosmetic efficacy; cosmetic formulation; barrier function; skin irritation
Special Issues, Collections and Topics in MDPI journals

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Published Papers (4 papers)

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Research

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794 KiB  
Article
Significant Reduction of Body Odor in Older People with a pH 4.0 Emulsion
by Michael Kemper, Stephan Bielfeldt, Ulrich Knie, Klaus-Peter Wilhelm and Christoph Abels
Cosmetics 2015, 2(2), 136-145; https://doi.org/10.3390/cosmetics2020136 - 11 May 2015
Cited by 1 | Viewed by 10775
Abstract
The impact of increasing age on body odor has become an important issue as our understanding of underlying skin changes in older people has increased. Therefore, cosmetic skin products especially for the needs of the elderly are of growing importance. This randomized single-blind [...] Read more.
The impact of increasing age on body odor has become an important issue as our understanding of underlying skin changes in older people has increased. Therefore, cosmetic skin products especially for the needs of the elderly are of growing importance. This randomized single-blind crossover study assessed the deodorizing efficacy of two cosmetic products with different pH values on the age-specific odor of an elderly female subject panel (≥60 years). The two test products, adjusted to pH 4.0 and pH 5.8 were applied to the axillae once daily for three consecutive days after standardized washing of the axillae. The untreated axilla was used as a control. Six odor judges evaluated the efficacy of both products. Additionally, bactericidal and fungicidal activity was investigated with in vitro microbiologic tests. The pH 4.0 water in oil (W/O) emulsion significantly reduced axillary malodor in 44 elderly subjects at 8 and 24 h after treatment, compared with controls (untreated axillae) (p < 0.001 after 8 and 24 h), whereas pH 5.8 emulsion had no effect (p = 0.441 after 8 h; p = 0.425 after 24 h). Moreover, the pH 4.0 emulsion reduced axillary malodor at 8 and 24 h after treatment, compared with the pH 5.8 emulsion just narrowly missing statistical significance (p = 0.078 after 8 h; p = 0.053 after 24 h). Microbiologic in vitro tests showed that the pH 4.0 emulsion reduced the levels of odor-producing bacteria S. epidermidis and C. minutissimum after 1 h (2.98 log and 4.25 log). After 24 h, levels of S. aureus (>5.50 log), P. acnes (>5.30 log) and E. coli (>5.46 log) were further reduced whereas no effect was observed for pH 5.8. A pH 4.0 emulsion significantly reduced axillary malodor for up to 24 h after application in females aged at least 60 years. This reduction in malodor is very likely due to a reduction of odor-producing bacteria. Full article
(This article belongs to the Special Issue What Do You Know about Cosmetics?)
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Review

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919 KiB  
Review
New Cosmetic Contact Allergens
by An Goossens
Cosmetics 2015, 2(1), 22-32; https://doi.org/10.3390/cosmetics2010022 - 4 Feb 2015
Cited by 5 | Viewed by 16368
Abstract
Allergic and photo-allergic contact dermatitis, and immunologic contact urticaria are potential immune-mediated adverse effects from cosmetics. Fragrance components and preservatives are certainly the most frequently observed allergens; however, all ingredients must be considered when investigating for contact allergy. Full article
(This article belongs to the Special Issue What Do You Know about Cosmetics?)
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2140 KiB  
Review
Hormetins as Novel Components of Cosmeceuticals and Aging Interventions
by Suresh I. S. Rattan
Cosmetics 2015, 2(1), 11-20; https://doi.org/10.3390/cosmetics2010011 - 6 Jan 2015
Cited by 7 | Viewed by 8570
Abstract
A promising strategy for maintaining a healthy and youthful phenotype during aging is that of mild stress-induced beneficial hormesis. The basis of hormesis lies in the molecular pathways of stress response, which are essential for the survival of a biological system by activation [...] Read more.
A promising strategy for maintaining a healthy and youthful phenotype during aging is that of mild stress-induced beneficial hormesis. The basis of hormesis lies in the molecular pathways of stress response, which are essential for the survival of a biological system by activation of maintenance and repair mechanisms in response to stress. Moderate physical exercise is the best example of a hormetin that brings about a wide range of health beneficial hormesis by first challenging the system. Similarly, other natural and synthetic hormetins can be incorporated in cosmeceutical formulations, and can help achieve benefits including maintenance of the skin structure and function. Several polyphenols, flavonoids and other components from spices, algae and other sources are potential hormetins that may act via hormesis. Stress response pathways that can be analyzed for screening potential hormetins for use in cosmetics and cosmeceuticals include heat shock response, autophagy, DNA damage response, sirtuin response, inflammatory response and oxidative stress response. Full article
(This article belongs to the Special Issue What Do You Know about Cosmetics?)
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216 KiB  
Review
Safety Evaluation of Cosmetic Ingredients: In Vitro Opportunities for the Identification of Contact Allergens
by Emanuela Corsini, Angela Papale, Valentina Galbiati and Erwin L. Roggen
Cosmetics 2014, 1(1), 61-74; https://doi.org/10.3390/cosmetics1010061 - 20 Mar 2014
Cited by 15 | Viewed by 8858
Abstract
Irritant and allergic contact dermatitis are undesired side effects in the development of drugs and cosmetics as well as after contact with environmental or industrial chemicals. Over the last decades, a great deal of progress has been made in the development of alternative [...] Read more.
Irritant and allergic contact dermatitis are undesired side effects in the development of drugs and cosmetics as well as after contact with environmental or industrial chemicals. Over the last decades, a great deal of progress has been made in the development of alternative In vitro test to assess these issues. Driven by the 7th Amendment to the European Cosmetic Directive, the EU policy on chemicals (the registration, evaluation, authorization and restriction of chemicals (REACH) system), the update of the European legislation on the protection of animals used in research, and emerging visions and strategies for predicting toxicity, in vitro methods are likely to play a major role in the near future. On 12 December 2013, the European Union Reference Laboratory for Alternatives to Animal Testing (EURL ECVAM, part of the European Commission Joint Research Centre) published its Recommendation on the Direct Peptide Reactivity Assay (DPRA) for skin sensitization, capable of distinguishing sensitizers from non-sensitizers. Other assays (i.e., KeratinoSens™ assay) will follow shortly. While a number of methods are at various stages of development and use, currently it is not possible to rank chemicals for their sensitizing potency, an issue that is important for a full safety assessment. It is expected that a predictive method to totally replace animal testing will be in the form of a test battery comprising molecular, cell-based, and/or computational methods, the so-called “Integrated Approaches to Testing and Assessment”. This review aims to discuss the state-of-the-art in the field of in vitro assessment of contact sensitizers. Full article
(This article belongs to the Special Issue What Do You Know about Cosmetics?)
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