Search Cosmetics & Toiletries: Page 8

1,896 Results

Type: Article

Nanotechnology Enhances Bio-Adhesion and Release After Rinse-Off

A nanosphere technology platform enhances the deposition of encapsulated ingredients on body surfaces after rinse-off application and provides a prolonged release action.

Woman Holding Her Hair Pulling Strength Test Adobe Stock 493393919

Correlating Porosity and Tensile Strength of Chemically Modified Hair

This study validates the porosity method against the widely accepted method of tensile strength for determining the hair damage imparted to hair due to cosmetic treatments.

GreenSustainableChemistryNaturalLabGlassware_850x425

Startup Solutions: A Survey of Green and Sustainable Innovations

Today is perhaps the most active time in decades for startup firms focused on natural (non-synthetic) and sustainable materials, replacement ingredients, green chemistry and fermentation technologies. This paper surveys several of them.

EthnicWomanFaceCream850

An Offensive Defense: Minimizing Preservatives, Maximizing Protection and Resources

Designing formulations with maximum preservation efficacy using minimum preservative quantities is vital for several reasons, outlined here. This strategy is referred to as an “offensive defense,” and requires leveraging the right preservatives and levels for given formulation designs.

Antibacterial and Anti-inflammatory Effects of a Magnolia Extract

P. acnes can exacerbate acne as a result of the inflammatory properties of the cell wall short chain fatty acids and chemotactic factors. Here, researchers investigate the effectiveness of a magnolia extract as an acne treatment, based on the known anti-inflammatory and antimicrobial effects from magnolol and honokiol within the material.

Characterizing and Evaluating the Effectiveness of Volcanic Pumice Exfoliants

Pumice has a recognized application as an abrasive agent to promote exfoliation of the skin. In this study, different particle size fractions of pumice sampled from several geologic occurrences in São Miguel’s island, the Azores archipelago, were used in the preparation of exfoliation formulations. Gels and soap were prepared and characterized, and their efficacy evaluated.

Antibacterial and Anti-inflammatory Effects of a Magnolia Extract

P. acnes can exacerbate acne as a result of the inflammatory properties of the cell wall short chain fatty acids and chemotactic factors. Here, researchers investigate the effectiveness of a magnolia extract as an acne treatment, based on the known anti-inflammatory and antimicrobial effects from magnolol and honokiol within the material.

Effects of Occlusion (III): Irritant and Allergic Contact Dermatitis

This is the third article in a series discussing effects of occlusion on skin. Previously, we reviewed the effects of occlusion on the percutaneous absorption (C&T November 2003) and on wound healing (C&T April 2004). The present article focuses and summarizes the adverse effects of occlusion. Occlusion enhances skin hydration and increases percutaneous absorption of applied substances with exception. On the other hand, it may also increase the penetration of irritants and/or antigens entering into skin and hence may increase irritant and allergic contact dermatitis. Additionally, occlusion compromises skin barrier function by impairing passive transepidermal water loss at the application site, and hence aggravates the irritant effect of applied compounds.

Photostabilization of Retinol and Retinyl Palmitate by Ethylhexyl Methoxycrylene

This study examines the photostability of retinol and retinyl palmitate, finding they break down rapidly when exposed to UV radiation in the 290–400 nm range. This severely reduces their concentrations in finished formulations. However, when combined with ethylhexyl methoxycrylene, these retinoids are shown to be protected against photodegradation, thus preserving their concentrations both during the manufacturing process and following application to the skin.

Penetration of Cosmetics Into and Through the Stratum Corneum

The penetration routes of substances through the stratum corneum and how these transport pathways function are becoming better understood. Despite this progress, however, the penetration mechanisms of cosmetic formulations remain mysterious. This overview presents current knowledge on the various pathways of penetration, and suggests that even if cosmetic formulations penetrate no deeper than the surface, their efficacy may still be optimal.

Consumer Perception of Fine Lines and Wrinkles: Qualitative Assessment

There are varying definitions, associations and overall impressions of fine lines and wrinkles among different consumer segments. The findings of this study offer invaluable insight into consumers’ opinions, and by qualitative in-depth interviews, they provide a well-defined vernacular for aging descriptors. This language is critical for developmental research, consumer evaluation and marketing within the cosmetic industry.

Large-scale Screenings of Botanical Ingredients: Challenges and Opportunities

Botanical ingredients are interesting for their unique and complementary chemical diversities yet they are criticized for these very traits, which make quality assurance, reproducibility and good phytochemical characterization—required for successful high throughput screening, difficult. This article discusses these challenges as well as the benefits of large-scale screenings of botanical extracts that are currently used or developed for cosmetic product development.

WomanLookingatHerDamagedHair850x425

Hidden Hair Damage and the Importance of Multiple Tests

It is of paramount importance for hair researchers to know the history of hair at the time of applying a treatment. The lack of such knowledge can create misleading results. Thus, a stress-strain test in both dry and wet states can provide a rapid means to check the reliability of the information collected, as is shown here.

NaturalFacialScrub850

Replacing Microplastics: Natural Cellulose Offers Gentle and Biodegradable Exfoliation

While cosmetics represent a small source of primary and secondary microplastics in the environment, it is a source that could easily be avoided by using natural biodegradable alternatives. As such, described herein is a research project to identify a natural, biodegradable alternative for peel applications. Plant cellulose was of particular interest.

Dispelling the 'Law of Wiechers' and Maximizing Actives Delivery

Jonathan Hadgraft, PhD, named "The Law of Wiechers in Cosmetics" after his friend and colleague. This law argues that all actives should be formulated at 3% for maximum delivery, which Wiechers recently discussed in honor of Hadgrafts's 60th birthday.

A Review of Current Sunscreen Formulation Techniques and Technology

The author reviews several sunscreen formulations currently on the market and discusses their effectiveness and formulation strategies.

Hair Conference Investigates Biology and Material Science of Hair

A running joke has developed at past hair science meetings that the hair research world comprises two camps– “The Friends of the Follicle,” whose focus resides in the biology, and “The Dead Fiber Club,” whose interest lies with the complex material science of this remarkable substrate.

Photostabilization of Retinol and Retinyl Palmitate by Ethylhexyl Methoxycrylene

This study examines the photostability of retinol and retinyl palmitate, finding they break down rapidly when exposed to UV radiation in the 290–400 nm range. This severely reduces their concentrations in finished formulations. However, when combined with ethylhexyl methoxycrylene, these retinoids are shown to be protected against photodegradation, thus preserving their concentrations both during the manufacturing process and following application to the skin.

Page 8 of 106