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32 Results
Type: Article
Section: Testing > Method/Process
Method/Process
Measuring the Antioxidant Potential of an Acai Extract
The antioxidant potential of cosmetic materials can be evaluated by several methodologies, including a commercial kit that measures total antioxidant status, as illustrated here with a commercial extract from the fruit of the açaí, a Brazilian palm tree. Applications in antiaging products are suggested.
Method/Process
Measuring the Antioxidant Potential of an Acai Extract
The antioxidant potential of cosmetic materials can be evaluated by several methodologies, including a commercial kit that measures total antioxidant status, as illustrated here with a commercial extract from the fruit of the açaí, a Brazilian palm tree. Applications in antiaging products are suggested.
Method/Process
Evaluating Essential Oils in Cosmetics: Antioxidant Capacity and Functionality
In the present work, the antioxidant capacities of three essential oils derived from basil and thyme were evaluated using a photochemiluminescence (PCL)-based assay. In addition, since the base formulation can affect the antioxidant activity of oils contained therein, ingredient interactions within final formulations were investigated.
Method/Process
Evaluating Essential Oils in Cosmetics: Antioxidant Capacity and Functionality
In the present work, the antioxidant capacities of three essential oils derived from basil and thyme were evaluated using a photochemiluminescence (PCL)-based assay. In addition, since the base formulation can affect the antioxidant activity of oils contained therein, ingredient interactions within final formulations were investigated.
Method/Process
A Dermatological View: Antioxidant Inhibits UV Erythema In Vivo in Humans
Described here was an in vivo model to determine antioxidative capacity of a topical skin care emulsion versus the emulsion’s vehicle on human skin that was exposed to UVR. Results suggest the test emulsion and its vehicle control inhibited the induction of erythema and reduced inflammation caused by the UV exposure.
Literature/Data
Safeguarding Squalene: Lemon Myrtle Antioxidant for Pollution Protection and Oleostasis
Squalene becomes easily oxidized when exposed to pollution and UV radiation, which promotes skin inflammation, the production of poor-quality sebum, comedogenesis and wrinkling. Lemon myrtle leaf extract neutralizes squalene oxidation and can protect all ethnic skin types from environmentally induced oily skin, restoring oleostasis.
Method/Process
A Dermatological View: Antioxidant Inhibits UV Erythema In Vivo in Humans
Described here was an in vivo model to determine antioxidative capacity of a topical skin care emulsion versus the emulsion’s vehicle on human skin that was exposed to UVR. Results suggest the test emulsion and its vehicle control inhibited the induction of erythema and reduced inflammation caused by the UV exposure.
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.
Natural/Sustainable
Planting Ideas: Upcycled Rubber Seed Offers a Renewable Cosmetic Ingredient
The sustainable utilization of by-products from the para rubber production industry is presented here for cosmetics. Experiments confirmed the safety of para rubber seed oil, in addition to antioxidant and skin-lightening efficacies.
Method/Process
A Rapid and Sensitive In vitro Method to Ascertain Antioxidative Capacity*
New methodologies have recently been developed to determine antioxidant effects but they often require extensive training and are time-consuming to conduct. In the present article, however, the authors describe an in vitro method to detect the effects of antioxidant-containing formulations using photochemiluminescence to provide rapid, accurate and sensitive measurements.
Method/Process
Detecting the Protective Power of a Hair Health Multi-peptide: An Integrated Approach
This work measures the antioxidant potential of a hydrolyzed cicer seed extract, a multi-peptide derived from chickpeas, to protect hair. Advanced methods such as FTIR, DCFH-DA assays, cyclic fatigue and DSC testing are combined for a comprehensive view.
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
Dihydroavenanthramide D for Anti-irritant and Anti-itch
Naturally occurring and synthetic avenanthramides were evaluated for their efficacy to inhibit substance P-induced release of histamine from mast cells. In vivo tests showed that four synthetic avenanthramides demonstrated ability to significantly reduce histamine-induced itch and redness. Dihydroavenanthramide D was also shown to be an excellent antioxidant.
Method/Process
A Dermatological View: Using Photochemiluminescence to Quantify the Antioxidative Capacity of Topicals
Exposure to ultraviolet radiation (UVR), air pollutants, chemical oxidants and aerobic microorganisms may damage the skin. In particular, reactive oxygen species (ROS) are considered a likely contributor to skin aging, cancer and certain skin disorders.
Method/Process
Bio + Chemo Guidance Uncover New Benefits in Known Naturals:
Murraya Koenigii
Extract Case Study
Murraya koenigii
extracts derived via various techniques were compared. One developed through chem- and bio-guidance paired with a natural deep eutectic technology uncovered lesser-known efficacies, leading to a natural active to boost elastin synthesis.
Method/Process
DNA Metabarcoding Tracks Traceability of Naturals: Wild Teasel Case Study
This study authenticates
D. fullonum
from raw material to final ingredient. It compares
D. fullonum
and
D. sylvestris
in a three-step study by: barcoding the raw material, metabarcoding the two extracts and bioinformatics processing.
Efficacy
The Dirty Truth About Pollution-induced Skin Aging: The AhR Pathway Tells All
Studies have shown that exposure to airborne, traffic-related particulate matter (PM) is associated with increased signs of extrinsic skin aging.1-3 Using model particles as surrogates, these researchers developed an in vitro model to evaluate premature aging induced via the aryl hydrocarbon receptor (AhR) pathway. They found a new AhR antagonist could inhibit the up-regulation of genes indicative for premature aging.
Testing
Mitigating 'Maskne:' Boldo to Balance Sebum, Bacteria and Redness in Acneic Skin
Peumus boldus
(boldo) extract was tested for effects on sebum production,
S. aureus
growth and
C. acnes
lipase activity in vitro, as well as on skin redness in vivo. This work aimed to develop a natural ingredient to control sebum, inhibit microbes and their activity, and reduce redness in acne-αfflicted skin.
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