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The use of silicones as a color-lock aid in rinse-off hair conditioners
Abstract
Based on a market study of existing ban care products and claims, a study was conducted to determine the efficacy of several relatively new silicone technologies in hair color preservation when delivered from rinse-off conditioner formulations. Testing methodology was developed which evaluated the effect of intense UV radiation exposure, shampoo washing and rinse-off product treatments along with their contributions to the removal of permanent hair colorants. Color evaluation was completed using a spectrophotometer-colorimeter which measures L*, a* and b* values. The washing process was found to be the most significant factor in the removal of hair color. While UV exposure had a significant impact only after 90 hours of intense irradiation. Results of the study concluded that the use of amino functional silicones along with other functional silicone materials provide enhanced color retention when delivered from a rinse-off conditioner formulation. It was also confirmed that silicone materials provide additional benefits beyond color retention including, shine, wet combing, reduced drying time, etc.
... The self wetting properties eliminate the need for mechanical dispersers and have the outstanding ability to suspend and stabilize formulations. Hair Coloring and Highlighting Polymers [19][20][21][22][23][24][25] act as thickeners for oxidation dyes, conditioners and hairprotectors. The thickeners used in hair care are classified as associative thickeners, hydrophobically modified ethoxylated urethanes (HEUR), alkylmethicones and aminosilicones and nonassociative thickeners. ...
... The polymer has flexibility in choice of preservative system and is supported by comprehensive environmental, health and safety data. Advanced Formulation of Acrylates/Steareth-20 Methacrylate Copolymer comprise of: [19][20][21][22][23][24][25] Utility: Hydrophobically-modified Alkali Soluble Emulsions are being extensively used in hair-coloring products to gel the product on the substrate, but to simultaneously allow good color development. Acrylates/Steareth-20 Methacrylate Copolymer a rheology modifier is an anionic hydrophobically modified alkali-soluble acrylic polymer emulsion (HASE) with unusually high aqueous thickening and stabilizing efficiency. ...
Polymeric materials gained rapid significance in professional cosmetics formulation due to their large variety of functions. They are critically important for the creation of modern cosmetics and personal-care products. Polymers used in hair care represents promising means as film formers in hair fixatives, emulsifiers in hair-colorants, conditioning agents for hair, thickeners, rheology modifiers and sun protection agents. In the present paper different polymers which are used in hair care are classified on the basis of their application, along with their examples and mechanism of action.
... The loss of dye hair color typically occurs because of color wash-out during the daily shampooing process or can be initiated by environmental circumstances such as exposure to UV radiation which can break down the color molecule. It was found that the washing process is the most signifi cant factor in the removal of hair color, while UV exposure has a significant impact only after 90 hours of intense irradiation (1). Though the hair color fading mechanism associated with the shampoo process is not yet well understood, there are some main factors attributed to fading. ...
... The majority of these products are in the form of shampoo and conditioners. Some of them use silicones which form a hydrophobic fi lm on the hair surface to protect color and there are several studies which have claimed the color retention effect by using this approach (1,6). The primary objective of our research was to understand the physicochemical factors affecting shampoo-caused off-shade fading and develop approaches that provide measurable and consumer perceivable protection against color loss during shampoo washing of dyed hair. ...
... The loss of dye hair color typically occurs because of color wash-out during the daily shampooing process or can be initiated by environmental circumstances such as exposure to UV radiation which can break down the color molecule. It was found that the washing process is the most signifi cant factor in the removal of hair color, while UV exposure has a significant impact only after 90 hours of intense irradiation (1). Though the hair color fading mechanism associated with the shampoo process is not yet well understood, there are some main factors attributed to fading. ...
... The majority of these products are in the form of shampoo and conditioners. Some of them use silicones which form a hydrophobic fi lm on the hair surface to protect color and there are several studies which have claimed the color retention effect by using this approach (1,6). The primary objective of our research was to understand the physicochemical factors affecting shampoo-caused off-shade fading and develop approaches that provide measurable and consumer perceivable protection against color loss during shampoo washing of dyed hair. ...
Synopsis The fading of oxidative color in hair as a result of daily shampoo washing activities has become a common problem and a source of frequent complaints by consumers. The fading occurs primarily through hair dye solubility in water. One aspect of the current study investigates the physical and chemical factors that influence hair color fading during the washing process. This is accomplished by testing hair dye dissolution in water from dyed hair samples with variation of surfactant type, pH, and hair type. Furthermore, a new approach to preventing color fading is developed aiming to provide an effective barrier function for hair dye from dissolving into water. The preliminary investigation of a series of polymers with various functional groups indicates that polymers with hydrophobically modified and cationic functionalities are most effective in preventing hair dye dissolution in water. It is also evident that a synergistic effect of the polymer's hydrophobic moieties and cationic charges are important on hair color protection during shampoo washing processes. A primary example of a polymer within this category is a cationic terpolymer of vinylpyrrolidone, dimethylaminopropyl methacrylamide, and methacryloylaminopropyl lauryldimonium chloride (INCI: Polyquaternium-55). The color protection benefit of this polymer is evaluated using newly developed methodologies for evaluating hair color changes, such as hair color fading tests through multiple shampoo washes with mannequin heads and hair tresses, both derived from human hair, colorimetry, and quantitative digital image analysis. In addition, new infrared spectroscopic imaging techniques are used to detect the hair dye deposition behavior inside hair fibers both with and without the color protection treatment. Both visual and instrumental measurement results indicate that Polyquaternium-55 provides a high level of color protection when formulated in a hair color protection regimen with up to 50% color protection. This regimen significantly outperforms commercial products that were tested containing a color protection claim. The proposed mechanism for the anti-fading action of hydrophobically modified polymers includes a cationic charge-reinforced hydrophobic barrier. This model is supported by evaluating the color fastness effect of several different polymer chemistries and by measuring hair surface hydrophobicity changes.
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