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Section: Testing > Efficacy
Method/Process
New Ideas on Hair Breakage: Mending Existing Flaws
Our historical beliefs as to the causes of hair breakage have been largely shaped by findings from testing approaches. More recently, an alternate mechanical testing technique, fatigue testing, has been changing our perspective on this topic.
Efficacy
Heat Protection Getting Warmer: Specialty Silicones for Hair
The present study examines the ability of silicones to protect hair during heat styling, compared with other industry benchmarks and untreated hair. Also discussed are the mechanisms through which different silicones contribute heat protection in hair care products such as leave-in conditioners, serums and other product forms.
Method/Process
Sabinsa Serum Clinically Proven to Prevent Hair Loss
Sabinsa has published a study in
Clinical, Cosmetic and Investigational Dermatology
showing successful results for its health serum in adults experiencing hair thinning and loss.
Efficacy
Beating the Damaging Effects of Heat on Hair
Heat treatments are among the more popular methods for achieving straight hair, yet their high temperatures are quite damaging to the hair’s structures. Learn about the damaging effects and suggested solutions for repairing heat-damaged hair.
People
P&G Hair Expert Jennifer Marsh Joins
C&T's
Scientific Advisors
Cosmetics & Toiletries
is pleased to welcome Jennifer Marsh, PhD, of Procter & Gamble, to its highly esteemed Scientific Advisory Board. As an accomplished Principal Scientist in the Beauty and Technology division, Marsh has conducted multiple studies on bleach and oxidative chemistry for hair color technologies.
Literature/Data
P&G Research Shows Reducing Scalp Stress Improves Hair Anchoring
P&G Beauty's KeepItAnchored hair loss brand has published a series of studies finding that controlling oxidative stress in the scalp reduces hair loss.
Efficacy
Your Hair on Acid: The Influence of Carboxylic Acids
Carboxylic acids are growing in use to alter hair's properties from the inside out. This column explores the efficacy of these materials and presents possible explanations for their effectiveness.
Efficacy
A Sunny Proposition: The Effects of Sun on Hair
While not nearly as well-documented as skin, plenty of literature indicates the sun can have damaging effects on hair.
Efficacy
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.
Literature/Data
Zombie Hair and Insights from the Living-dead Connection
"How can we create a synergy between the living and dead part of hair to give consumers the best results? We manipulate the living to improve the dead,” said Thomas Dawson, Jr., Ph.D., during the TRI-Princeton 8th International Conference on Applied Hair Science.
Colorant
The Depths of Hair Dyes: Understanding Users, Formulating Answers
The present article touches on misconceptions about ammonia- versus monoethanolamine-based hair dyes. It also analyzes the facts about these ingredients to arm formulators with both the consumer perspective and scientific rationale for ingredient choices.
Efficacy
Kao Raises Shield Against Dust and Pollen in Hair
Kao Corp. presented new findings on the adhesion and negative effects of dust and pollen in hair. From this, researchers designed a shampoo and conditioning system to suppress this adhesion based on an oil-absorbing polymer.
Efficacy
Quantifying the Performance of Hair Styling Products—Part 1
There are two general classifications of hair styling products—those that help with style creation and those that prolong the style. Both facilitating style creation and promoting hold longevity stem from the presence of water-soluble polymers in formulations. This paper discusses methods to evaluate these properties and quantify performance.
Sensory
SGS Measures Diaper Softness—Could it Work for Hair?
SGS's laboratory in France is the first to measure the softness of disposable hygiene products using specialized equipment that reproduces the perception of human touch. Could a similar approach work for hair?
Companies
German Wool Institute Awards Symrise for Hair Damage Findings
"This award will definitively have an impact on the visibility and credibility of Symrise as a major player in hair research and product development for our customers.”
Efficacy
Defending Integrity: Microemulsion to Restore Bleached and Dyed Hair Properties
Unlike skin, hair lacks regenerative properties, so it is important introduce components during bleaching and color treatments that preserve and maintain hair’s structure. The present article proposes a bis-PCA dimethicone solution, which acts via novel bonding mechanisms to impart cumulative strengthening in chemically treated hair.
Efficacy
Dual Defense: Protecting and Repairing Hair Holistically, Inside and Out
Cumulative stress encountered by hair during daily grooming causes breakage and other forms of damage. This paper presents a holistic approach to protect hair from within and without by targeting the cortex and cuticle sheath. Fatigue testing and other assessments are carried out to determine efficacy.
Literature/Data
[podcast] Anti-pollution, Genomics, Personalization and More in Hair Research
This podcast explores new directions in hair research, including anti-pollution and hair protection, the hair follicle microbiome, how genomics is changing what’s possible, personalized products and more. Listen now!
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