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Section: Cosmetic Ingredients > Colorant

Comparatively Speaking: Metallic vs. Natural Hair Dyes

Hair color can be altered using a variety of dyes. This is the second in a series of three columns that will address hair color products, with the difference between natural and metallic dyes being addressed here.

Comparatively Speaking: Good vs. Bad Hair Color

Tony O’Lenick asks color expert Nick Morante to differentiate between a good hair color and a bad hair color, noting how water minerals, color-treated hair, bleaching and more can affect the final color.

Bench & Beyond--Color Lock in Hair Care

What is the key to unlocking the challenge of color lock in hair care? You might find out this month at PCIA in Seoul, Korea. Several of raw materials are the focus of this column, which examines ways to retain the color in artificially colored hair.

Comparatively Speaking: Temporary vs. Permanent Hair Color Systems

To explain the difference between temporary and permanent hair color systems, Tony O'Lenick defers to Nick Morante, a color expert, who notes that the difference lies in the ingredients used and the irritation produced.

By using a scientific data-driven approach, Choicify helps shoppers find the right shade of hair color.

Henkel Personalizes Hair Color with Choicify AI Consult

Through Choicify, users are offered personalized hair color consultations.

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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.

A Hair Dyeing Solution for the Dye-allergic Consumer

This article describes how to identify allergic contact dermatitis resulting from hair dye, and outlines prevention principles for those who wish to continue dyeing their hair despite being allergic—with clear implications for those formulating these products. The main sensitizers in hair dye are discussed, along with techniques to minimize exposure to these allergenic substances.

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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.

Comparatively Speaking: Altering Hair with Bleach vs. Temporary Dye

Hair can be treated using several different types of products to alter the color. This is the first in a series of three columns that will address the above color products, with the difference between bleach and temporary dyes being initially discussed.

Improving Hair Color Retention Using Quat Functional Olefin-graft Polymers

Formulations containing quaternary-modified olefin-graft polymers are shown here to improve the permanency of artificial hair colorant in human hair exposed to repeated washing. In addition, when these polymers were applied to hair by a sulfate-based shampoo, the foam height and viscosity of the shampoo remained unaffected.

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Patent Pick: Even, Intense Hair Color with Reduced Oxidative Precursor

Patent Picks are chosen by the editors from publicly available sources. Today's invention from P&G utilizes oil in an oxidative hair dye precursor to reduce the amount of precursor necessary to impart intense, even hair color.

Improving Hair Color Retention Using Quat Functional Olefin-graft Polymers

Formulations containing quaternary-modified olefin-graft polymers are shown here to improve the permanency of artificial hair colorant in human hair exposed to repeated washing. In addition, when these polymers were applied to hair by a sulfate-based shampoo, the foam height and viscosity of the shampoo remained unaffected.

Patent Picks—Hair and Eyelash Growth, Fixatives, Surfactants and More

Chosen biweekly by Rachel Grabenhofer, Cosmetics & Toiletries magazine editor, for their relevance to personal care, Patent Picks are taken from publicly available sources. This edition features recently issued patents relevant to hair care, styling and growth.

Lubrizol Life Science has introduced Go with the Flow Hair Makeup & Style.

Lubrizol Encourages to ‘Go with the Flow’ with Temporary Hair Color

Lubrizol Life Science–Beauty has introduced Go with the Flow Hair Makeup and Style, for temporary color and style transformation in a convenient travel size.

The zero-ammonia, vegan hair color is said to provide exceptional performance, achieving beautiful color, coverage and shine.

Goldwell Rolls Out TopchicZero Climate Neutral Professional Hair Care Range

TopchicZero products are climate neutral, reducing carbon emissions from raw materials, packaging, production, transport and disposal, and compensating unavoidable emissions through carbon offsets with ClimatePartner.

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[podcast] Author Commentary: Alexander Chan, Ph.D., on Hair Dyes

Alexander Chan, Ph.D., has been in the field and has heard things. He knows what consumers believe about hair dye ingredients, and why they're confused. He wrote an article about it for our upcoming February 2018 issue; and in this podcast, he talks about why he wrote it. Listen now!

Stanford Study Connects Stem Cell Protein to Human Hair Color

According to a study by Stanford University School of Medicine, a molecule crucial to stem cell functioning plays a major role in controlling human hair color.

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Vegan Roots: Siddha-inspired Botanical Extracts as Colorants for Hair Dyes*

This article describes the development of hair dyes with 100% vegetable-derived colorants. Testing showed good semi-permanent hair color efficacy without the use of synthetic colorants, alkalizers and peroxide or other oxidizers.

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