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1,896 Results
Type: Article
Sun Care
Developing Sunscreens for the Preventive Treatment of Photodamage and Premature Aging
This article reviews the mechanisms of ultraviolet radiation insult to skin and explains the formulation of sunscreens to protect against this damage. Further, since the efficacy of combinations of UV filters will vary with formulation base, the formula vehicle and form are discussed, as well as an overview given of typical sunscreen efficacy tests performed prior to production.
Formulas/Products
The Anatomy of a Formula—Antiperspirant Sticks, Soft Solids and Gels
Deodorants have been used for more than 5,000 years, with every major civilization having left a record of efforts to mask body odors. Over time, applications have evolved from masking offensive odors with simple perfumed oil, to today’s complex deodorant and antiperspirant (AP) applications.
Natural/Sustainable
Enhancing the Stability of Natural Oils and Butters with Rosemary Extracts
Use of rosemary extracts to provide oxidative stability to various natural oils and exotic butters offers a way for formulators to reduce the use of synthetics and chemicals in skin care products.
Literature/Data
Protecting the Genome of Skin Cells from Oxidative Stress and Photoaging
According to a concept proposed here, protection of nuclear DNA and mitochondrial DNA against UVB and UVA radiation can break the vicious cycle responsible for skin photoaging.
Method/Process
Preservative Efficacy Testing of Aqueous Cosmetics and Drugs without Counting Colonies
A miniaturized system using broth enrichment followed by either streaking on agar or fluorescence treatments can eliminate colony counting in the linear regression method of preservative efficacy testing.
Methods/Tools
What is Light? A Brief History of Light and Its Behavior
This primer provides cosmetic scientists, engineers and physicists with an understanding of light. The quantum mechanics of history continue today as a guiding paradigm for computers, satellites and mobile communications, in addition to the cosmetically related fields of photoprotection and visual effects imparted through makeup to change appearance.
Cosmetic Ingredients
Structured Surfactant Systems for Deposition of Perfume on Skin and Hair
To maximize perfume delivery from structured cleansing formulations, the fragrance must be introduced before structuring the formulation into multilamellar vesicles. Structured formulations fragranced in such a way are shown here to improve perfume deposition and duration versus micellar systems, with no negative impact on perfume burst during use.
Method/Process
Determining Korean Consumers’ Degree of Exposure to Lipstick and Face Creams
This study describes methods used in a Korean study to calculate consumer exposure to lipstick and face creams. The average amount applied daily was estimated and compared with data collected by weighing containers before and after use. The data collected was 1.8 to 1.6 times greater than the estimate, so although the survey represented real use patterns, the actual data was more accurate.
Method/Process
Determining Korean Consumers’ Degree of Exposure to Lipstick and Face Creams
This study describes methods used in a Korean study to calculate consumer exposure to lipstick and face creams. The average amount applied daily was estimated and compared with data collected by weighing containers before and after use. The data collected was 1.8 to 1.6 times greater than the estimate, so although the survey represented real use patterns, the actual data was more accurate.
Magazine
Self Versus Third-party Perceptions of Female Age, Health and Attractiveness — Plus the Role of Facial Skin Features Across Five Ethnic Groups
Presented here are findings of self- and third-party ratings of female facial appearance for age, health and attractiveness across five ethnic groups. Implications of beliefs across the groups about the roles of given skin features are also discussed.
Methods/Tools
Natural vs. Synthetic Antimicrobials and HDAC as an Indicator of Microflora Health
This article reviews the role of skin microflora in protecting skin, and assesses how the histone deacetylase (HDAC) enzyme is implicated. From this, HDAC expression is used as an indicator to compare the effects of traditional biocides and preservatives with natural antimicrobials on skin’s microbiome. Results suggest the latter effectively preserve products while maintaining a healthy microbiome.
Literature/Data
Human Skin and Ocular Flora: The Effect of Product Formulation, Part 2
This second installment of a two-part article reviews the transient and resident microbial populations of the human ocular area and how they alter with age, environment and exposure to antimicrobial agents. Considerations for the formulator of how cosmetic products may affect and be impacted by the flora also are provided.
Literature/Data
Collagen Induction Therapy Without Risk of Hyperpigmentation and Other Topics: Literature Findings
This month’s survey of recent patent and research literature describes moneymaking ideas for personal care product development; including collagen induction without the risk of hyperpigmentation; algae and peptides to lift loose skin; UV-shielding makeup sticks; and volumizing mascara, among other concepts.
Method/Process
Influence of Skin Diffuse Reflectance on Sun Damage and Ingredient Efficacy Measurements
Current in vitro methods to assess photostability and antioxidant activity do not account for the diffuse reflectance of skin. Described here is an in vitro test that addresses this variable, mimics end-use product conditions and models photodamage processes. The approach is employed to determine the efficacy of an antioxidant from the
Camellia sinensis
(tea) plant.
Method/Process
Influence of Skin Diffuse Reflectance on Sun Damage and Ingredient Efficacy Measurements
Current in vitro methods to assess photostability and antioxidant activity do not account for the diffuse reflectance of skin. Described here is an in vitro test that addresses this variable, mimics end-use product conditions and models photodamage processes. The approach is employed to determine the efficacy of an antioxidant from the Camellia sinensis (tea) plant.
Method/Process
Testing the Safety and Efficacy of Multifunctional Personal Care Products, A Primer
Multifunctional products may offer solutions to consumer challenges but as the needs of consumers grow more complex, so do their safety and efficacy testing. This article provides a primer on these considerations.
Literature/Data
Collagen Induction Therapy Without Risk of Hyperpigmentation and Other Topics: Literature Findings
This month’s survey of recent patent and research literature describes moneymaking ideas for personal care product development; including collagen induction without the risk of hyperpigmentation; algae and peptides to lift loose skin; UV-shielding makeup sticks; and volumizing mascara, among other concepts.
Literature/Data
The Chemistry and Manufacture of Cosmetics, Volume I, Science, 4th Edition
The Chemistry and Manufacture of Cosmetics, Volume I, Science, 4th Edition
is an excellent resource and educational tool for beginning to advanced formulating cosmetic scientists and can be used as a textbook for any chemistry student interested in understanding or pursuing the cosmetic field.
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