Ingredients

HC BLUE NO. 4

HC Blue No. 4 is a semi-permanent hair dye that imparts a vibrant blue hue to the hair. This synthetic colorant belongs to the family of HC (Hair Color) dyes, which are designed to penetrate the hair shaft without the need for oxidative developers. HC Blue No. 4 is particularly effective on pre-lightened or naturally light hair, providing intense color results that gradually fade over time. The compound is water-soluble and has a relatively low molecular weight, allowing it to diffuse into the hair cortex. Its chemical structure enables it to form weak bonds w...

HC BLUE NO. 5

HC Blue No. 5, also known as Acid Blue 7, is a semi-permanent hair dye molecule widely used in the cosmetic industry for its vibrant blue coloration. This synthetic colorant belongs to the triarylmethane family of dyes and is particularly effective in creating cool-toned hair shades. HC Blue No. 5 is appreciated for its ability to adhere to the hair shaft without penetrating deeply into the cortex, allowing for longer-lasting color results compared to temporary dyes. The molecule's structure enables it to form ionic bonds with hair proteins, enhancing its stay...

HC BLUE NO. 6

HC Blue No. 6 is a synthetic hair dye molecule widely used in the cosmetic industry for its ability to impart vibrant blue hues to hair. This semi-permanent colorant belongs to the family of HC (Hair Color) dyes and is known for its effective color deposition without the need for oxidative processing. HC Blue No. 6 is particularly favored for its longevity and resistance to fading compared to other temporary dyes. The compound is water-soluble and penetrates the hair shaft, adhering to the cuticle and cortex. Its molecular structure allows for a balance betwee...

HC BLUE NO. 8

HC Blue No. 8 is a semi-permanent hair dye ingredient widely used in the cosmetic industry for its ability to impart a vibrant blue hue to hair. This synthetic colorant belongs to the class of HC (Hair Color) dyes, specifically designed for use in hair coloring products. HC Blue No. 8 is known for its excellent color payoff and longevity compared to temporary dyes. The molecule structure of HC Blue No. 8 allows it to penetrate the hair shaft partially, resulting in a color that lasts through multiple washes. It is particularly effective on pre-lightened or nat...

HC BLUE NO. 9

HC Blue No. 9 is a semi-permanent hair dye ingredient known for its vibrant blue coloration. This synthetic colorant belongs to the family of HC (Hair Color) dyes and is primarily used in temporary and semi-permanent hair coloring products. HC Blue No. 9 is particularly effective in creating cool-toned blue shades and can be combined with other dyes to achieve various hues. The molecule is designed to penetrate the hair shaft without causing significant damage to the hair structure. It adheres to the cuticle and cortex, providing color that typically lasts thr...

HC BROWN NO. 1

HC Brown No. 1 is a semi-permanent hair dye that imparts a rich brown hue to hair. This synthetic colorant belongs to the family of HC (Hair Color) dyes, specifically designed for use in hair coloring products. It is characterized by its ability to penetrate the hair shaft and provide long-lasting color without causing significant damage to the hair structure. The dye molecule of HC Brown No. 1 is small enough to diffuse into the hair cortex, where it interacts with the hair's natural pigments to create a deep, warm brown tone. It is particularly effective on ...

HC BROWN NO. 2

HC BROWN NO. 2, also known as 2-Nitro-p-phenylenediamine, is a synthetic hair dye molecule widely used in the cosmetic industry for its ability to impart rich brown hues to hair. This semi-permanent colorant is particularly effective in covering gray hair and providing long-lasting color results. HC BROWN NO. 2 penetrates the hair shaft, forming larger color molecules that remain trapped within the cortex, ensuring color stability and resistance to washing. The compound is typically used in concentrations ranging from 0.1% to 3.0% in hair dye formulations, dep...

HC BROWN NO. 3

HC Brown No. 3, also known as N,N-bis(2-hydroxyethyl)-2-nitro-p-phenylenediamine, is a synthetic hair dye ingredient commonly used in semi-permanent and temporary hair coloring products. This compound belongs to the family of nitrophenylene diamines and is characterized by its ability to impart brown shades to hair. The molecule consists of a para-phenylenediamine core with nitro and bis(2-hydroxyethyl)amino substituents. Its chemical structure allows for effective penetration into the hair shaft, where it interacts with the keratin proteins to provide color. ...

HC BROWN NO. 4

HC Brown No. 4, also known as 2-[(4-Amino-2-nitrophenyl)amino]ethanol, is a synthetic hair dye molecule used in semi-permanent and temporary hair coloring products. This compound belongs to the family of nitrophenylenediamines and is characterized by its ability to impart brown shades to hair. The molecule functions by penetrating the hair shaft and forming larger color compounds through oxidation. It is particularly effective in covering gray hair and providing a natural-looking brown hue. HC Brown No. 4 is often used in combination with other dye molecules t...

HC GREEN NO. 1

HC Green No. 1, also known as Light Green 5 or CI 61565, is a synthetic colorant used primarily in temporary hair dyes and some cosmetic products. This semi-permanent dye belongs to the triphenylmethane class of compounds and is characterized by its vibrant green hue. HC Green No. 1 is particularly effective in creating bold, fashion-forward hair colors and is often used in combination with other dyes to achieve a wide range of shades. The molecule's structure allows it to penetrate the hair shaft partially, resulting in color that typically lasts through seve...

HC ORANGE NO. 1

HC Orange No. 1, also known as 2-Nitro-p-phenylenediamine, is a synthetic dye widely used in semi-permanent hair coloring products. This orange-red compound belongs to the family of nitro dyes and is particularly effective in imparting vibrant orange to reddish-brown hues to hair. HC Orange No. 1 is valued for its ability to penetrate the hair shaft, providing longer-lasting color compared to temporary dyes. The molecule's small size allows it to diffuse into the hair cortex, where it interacts with the hair's proteins to create a more durable color. It is oft...

HC ORANGE NO. 2

HC Orange No. 2, also known as 1-(2-Hydroxyethylamino)-4-nitrobenzene, is a synthetic dye widely used in semi-permanent hair coloring products. This orange-red compound is particularly effective in imparting warm, coppery tones to hair. Its molecular structure allows it to penetrate the hair shaft, providing longer-lasting color compared to temporary dyes. The ingredient is approved for use in hair colorants in various countries, including those in the European Union, with specific concentration limitations. HC Orange No. 2 works by interacting with the kerati...

HC ORANGE NO. 3

HC Orange No. 3, also known as 2-Nitro-4'-hydroxyethylaminophenol, is a semi-permanent hair dye ingredient widely used in the cosmetic industry. This synthetic colorant provides vibrant orange to reddish-orange hues and is particularly effective in darker hair shades. HC Orange No. 3 penetrates the hair shaft, depositing color molecules that adhere to the cortex, resulting in longer-lasting color compared to temporary dyes. This compound is typically used in concentrations ranging from 0.5% to 3% in hair coloring formulations. It is often combined with other H...

HC ORANGE NO. 5

HC Orange No. 5, also known as 2-Nitro-4-aminophenol, is a synthetic dye widely used in semi-permanent hair coloring products. This orange-red compound belongs to the nitrophenol family and is particularly effective in imparting warm, copper tones to hair. HC Orange No. 5 is valued for its ability to penetrate the hair shaft, providing longer-lasting color results compared to temporary dyes. The molecule's structure allows it to bind effectively to keratin proteins in hair, ensuring color stability and resistance to washing. It is often combined with other dye...

HC ORANGE NO. 6

HC Orange No. 6 is a synthetic hair dye that belongs to the azo dye family, widely used in semi-permanent and temporary hair coloring products. This vibrant orange pigment is particularly effective in imparting warm, copper-like hues to hair, making it a popular choice for creating auburn and reddish-orange shades. Unlike permanent hair dyes, HC Orange No. 6 does not penetrate the hair shaft deeply, instead coating the hair's surface and gradually washing out over time. The dye is typically formulated with other colorants to achieve a range of desired shades a...

HC ORANGE NO. 7

HC Orange No. 7 is a synthetic hair dye ingredient primarily used in semi-permanent and temporary hair coloring products. This orange-red colorant belongs to the family of HC (Hair Color) dyes, which are designed to penetrate the hair shaft without causing significant damage to the hair structure. HC Orange No. 7 is known for its ability to impart vibrant orange to copper tones, particularly on lighter hair bases. The chemical composition of HC Orange No. 7 allows it to adhere to the hair cuticle and partially penetrate the cortex, resulting in a color that gr...

HC RED NO. 1

HC Red No. 1, also known as 4-amino-2-nitrophenol, is a synthetic hair dye ingredient primarily used in semi-permanent and temporary hair coloring products. This compound imparts a vibrant red hue to hair and is often combined with other dyes to create various shades of red, burgundy, and auburn. HC Red No. 1 is classified as a nitro dye, which means it contains a nitro group in its chemical structure. This dye penetrates the hair shaft without the need for an oxidizing agent, making it less damaging compared to permanent hair dyes. It typically lasts for 4-6 ...

HC RED NO. 10

HC Red No. 10 is a synthetic hair dye molecule widely used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the azo dye family and is known for its vibrant red-orange hue. HC Red No. 10 is particularly effective in creating warm, coppery tones and enhancing red shades in various hair coloring formulations. The dye molecule has a relatively low molecular weight, allowing it to penetrate the hair shaft without causing significant damage to the cuticle. It adheres to the hair's cortex, providing color that gradually f...

HC RED NO. 11

HC Red No. 11 is a synthetic hair dye molecule belonging to the nitro dye family. This semi-permanent colorant is widely used in the cosmetic industry for its ability to impart vibrant red hues to hair without the need for oxidative processing. The compound's chemical structure allows it to penetrate the hair shaft and adhere to the cortex, providing longer-lasting color results compared to temporary dyes. HC Red No. 11 is particularly effective in creating intense red, burgundy, and auburn shades, making it a popular choice for fashion-forward hair color tren...

HC RED NO. 13

HC Red No. 13, also known as 1-Amino-4-(2-hydroxyethyl)amino-2-nitrobenzene, is a synthetic hair dye ingredient widely used in the cosmetic industry. This semi-permanent colorant is particularly effective in creating vibrant red and burgundy hair shades. HC Red No. 13 penetrates the hair shaft, depositing color molecules that adhere to the cortex, resulting in long-lasting color that gradually fades over time. This dye is favored for its ability to provide intense color without the use of harsh oxidative agents, making it a gentler option for hair coloring. It...

HC RED NO. 14

HC Red No. 14, also known as 1-Naphthalenol, 4-[(4-aminophenyl)azo]-, hydrochloride, is a synthetic hair dye widely used in the cosmetic industry. This vibrant red colorant is primarily employed in semi-permanent and temporary hair coloring products. Its molecular structure allows for effective penetration of the hair shaft, resulting in rich, long-lasting color. HC Red No. 14 is known for its excellent color stability and resistance to fading, even after multiple washes. It performs well in various hair dye formulations, including creams, gels, and liquids. T...

HC RED NO. 15

HC Red No. 15, also known as 1-Amino-4-(2-nitrophenylazo)-2-nitrobenzene, is a synthetic hair dye compound primarily used in semi-permanent and temporary hair coloring products. This vibrant red pigment is notable for its ability to impart rich, intense red hues to hair without the need for oxidative processing. HC Red No. 15 is characterized by its low molecular weight, which allows it to penetrate the hair shaft effectively, resulting in longer-lasting color compared to other direct dyes. It exhibits good stability in various hair care formulations and demon...

HC RED NO. 17

HC Red No. 17 is a synthetic hair dye molecule widely used in semi-permanent and temporary hair coloring products. This vibrant red pigment belongs to the azo dye family and is known for its ability to impart rich, warm red tones to hair without the need for a developer or oxidizing agent. HC Red No. 17 is particularly effective on pre-lightened or naturally light hair, producing hues ranging from intense cherry red to softer auburn shades. The compound is appreciated for its color longevity compared to other semi-permanent dyes, typically lasting through 6-8 ...

HC RED NO. 18

HC Red No. 18, also known as 1-Methoxy-3-(β-hydroxyethylamino)-4-nitrobenzene, is a synthetic hair dye molecule primarily used in semi-permanent and temporary hair coloring products. This vibrant red pigment is designed to impart a rich, warm hue to hair without the need for oxidative processing. HC Red No. 18 is classified as a nitro dye, characterized by its ability to penetrate the hair shaft and deposit color molecules without causing significant damage to the hair structure. Its molecular size allows for effective color retention while still being small ...

HC RED NO. 19

HC Red No. 19, also known as 1-Amino-2-nitro-4-(2-hydroxyethyl)aminobenzene, is a synthetic hair dye compound primarily used in semi-permanent and temporary hair coloring products. This water-soluble ingredient imparts a vibrant red hue to hair and is often combined with other dyes to achieve various shades and tones. The molecule consists of a benzene ring with amino, nitro, and hydroxyethyl groups attached, contributing to its color-producing properties. HC Red No. 19 penetrates the hair shaft, depositing color molecules that adhere to the hair's cortex with...

HC RED NO. 20

HC Red No. 20 is a synthetic hair dye molecule belonging to the azo dye family. This vibrant red colorant is primarily used in semi-permanent and temporary hair coloring products, offering a range of shades from bright red to deep burgundy. Its molecular structure allows for effective penetration into the hair shaft without causing significant damage to the cuticle. HC Red No. 20 exhibits excellent color retention properties, typically lasting through multiple washes before gradually fading. It is compatible with various hair types and can be combined with oth...

HC RED NO. 21

HC Red No. 21, also known as 2-[(4-Aminophenyl)azo]-1,3-dimethyl-1H-imidazolium chloride, is a synthetic hair dye ingredient widely used in the cosmetic industry. This semi-permanent colorant belongs to the azo dye family and is particularly effective in creating vibrant red and burgundy hair shades. HC Red No. 21 is known for its ability to penetrate the hair shaft, providing longer-lasting color results compared to temporary dyes. The compound exhibits good stability in various hair care formulations and demonstrates resistance to washing and environmental f...

HC RED NO. 3

HC Red No. 3, also known as Basic Red 76, is a synthetic hair dye molecule widely used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the azo dye family and is characterized by its vibrant red hue. HC Red No. 3 is particularly effective in creating intense red, burgundy, and purple hair shades. The dye molecule has a relatively small size, allowing it to penetrate the hair shaft without causing significant damage to the cuticle. It adheres to the hair's cortex, providing color that typically lasts through several...

HC RED NO. 7

HC Red No. 7, also known as 2-[(4-Aminophenyl)azo]-1,3-dimethyl-1H-imidazolium chloride, is a synthetic hair dye compound widely used in the cosmetic industry. This semi-permanent colorant imparts vibrant red hues to hair without the need for oxidative processes. HC Red No. 7 is particularly effective on pre-lightened or naturally light hair, producing shades ranging from bright cherry to deep burgundy. The compound's molecular structure allows it to penetrate the hair shaft, adhering to the cortex for longer-lasting color. It is often combined with other dyes...

HC RED NO. 8

HC Red No. 8 is a synthetic color additive primarily used in semi-permanent hair dyes and temporary hair coloring products. This dye imparts vibrant red hues to hair, ranging from deep burgundy to bright cherry tones, depending on the concentration and formulation. HC Red No. 8 belongs to the family of azo dyes, characterized by their nitrogen-nitrogen double bonds. Unlike permanent hair dyes, HC Red No. 8 does not penetrate the hair shaft deeply, instead coating the hair's surface and gradually washing out over time. This property makes it an ideal choice for...

HC RED NO. 9

HC Red No. 9, also known as 2-[(2-Hydroxyethyl)amino]-5-nitrophenol, is a synthetic hair dye ingredient commonly used in semi-permanent and temporary hair coloring products. This water-soluble compound imparts vibrant red tones to hair, ranging from deep burgundy to bright cherry hues. HC Red No. 9 is particularly effective on pre-lightened or naturally light hair, providing intense color results without the need for oxidative processes. The molecule's structure allows it to penetrate the hair shaft partially, adhering to the cuticle and cortex layers. This re...

HC VIOLET NO. 1

HC Violet No. 1, also known as 2-[(4-amino-2-nitrophenyl)amino]ethanol, is a semi-permanent hair dye compound widely used in the cosmetic industry. This synthetic colorant imparts a vibrant purple hue to hair and is particularly effective on pre-lightened or naturally light hair. HC Violet No. 1 belongs to the family of HC (Hair Color) dyes, which are designed to penetrate the hair shaft and provide longer-lasting color compared to temporary dyes. The molecule's structure allows it to diffuse into the hair cortex, where it forms larger color complexes that are...

HC VIOLET NO. 2

HC Violet No. 2, also known as Basic Violet 2, is a synthetic hair dye molecule widely used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the family of triarylmethane dyes and is characterized by its vibrant purple hue. HC Violet No. 2 is particularly effective in imparting a cool, violet tone to pre-lightened or naturally light hair. The dye molecule works by penetrating the hair shaft and depositing color without significantly altering the hair's structure. It is non-oxidative, meaning it does not require a de...

HC VIOLET NO. 3

HC Violet No. 3, also known as 2-[4-(dimethylamino)phenyl]-6-methyl-3H-benzoxazolium chloride, is a synthetic hair dye ingredient widely used in the cosmetic industry. This semi-permanent colorant imparts a vibrant violet hue to hair and is particularly effective on pre-lightened or naturally light hair. The compound belongs to the cationic dye family and has a molecular weight of 312.8 g/mol. It is water-soluble and typically appears as a dark purple powder in its raw form. HC Violet No. 3 penetrates the hair shaft, depositing color molecules that adhere to t...

HC VIOLET NO. 4

HC Violet No. 4 is a synthetic hair dye molecule primarily used in semi-permanent and temporary hair coloring products. This ingredient imparts a vibrant purple hue to hair and is particularly effective on pre-lightened or naturally light hair. As a semi-permanent dye, HC Violet No. 4 gradually fades over several washes, typically lasting 4-6 weeks depending on hair care practices and frequency of washing. Chemically, HC Violet No. 4 belongs to the family of HC (Hair Color) dyes, which are designed to penetrate the hair shaft without the need for a developer. ...

HC YELLOW NO. 10

HC Yellow No. 10 is a synthetic hair dye ingredient widely used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the azo dye family and is known for imparting vibrant yellow to golden hues to hair. Unlike permanent dyes, HC Yellow No. 10 does not penetrate the hair shaft deeply, instead coating the hair's surface and gradually washing out over time. The molecule's structure allows it to adhere to the hair cuticle without causing significant damage, making it a popular choice for those seeking temporary color change...

HC YELLOW NO. 11

HC Yellow No. 11, also known as 3-Nitro-p-hydroxyethylaminophenol, is a semi-permanent hair dye ingredient widely used in the cosmetic industry. This synthetic colorant imparts vibrant yellow to golden hues to hair, making it a popular choice for highlighting and creating warm tones. HC Yellow No. 11 is particularly effective in coloring gray or light-colored hair, offering longer-lasting results compared to temporary dyes. As a direct dye, HC Yellow No. 11 does not require an oxidizing agent to develop its color, allowing for gentler application processes. It...

HC YELLOW NO. 12

HC Yellow No. 12 is a synthetic hair dye ingredient commonly used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the azo dye family and is known for its ability to impart vibrant yellow to golden hues to hair. HC Yellow No. 12 is particularly effective in creating warm blonde shades and enhancing highlights in lighter hair colors. The molecule's structure allows it to penetrate the hair shaft partially, resulting in color that lasts through several washes but gradually fades over time. This characteristic makes i...

HC YELLOW NO. 13

HC Yellow No. 13 is a synthetic hair dye ingredient primarily used in semi-permanent and demi-permanent hair coloring products. This molecule belongs to the azo dye family and is known for its ability to impart vibrant yellow to golden hues to hair. HC Yellow No. 13 is particularly effective in creating warm blonde shades and enhancing highlights in lighter hair colors. The compound exhibits good color fastness and stability, allowing for longer-lasting results compared to some other temporary dyes. It penetrates the hair shaft moderately, providing color that...

HC YELLOW NO. 14

HC Yellow No. 14 is a synthetic dye primarily used in semi-permanent hair coloring products. This water-soluble compound belongs to the azo dye family and is known for its ability to impart vibrant yellow to golden hues to hair. HC Yellow No. 14 is particularly effective in creating warm blonde shades and enhancing highlights in lighter hair colors. The dye molecule is designed to penetrate the hair shaft, providing longer-lasting color compared to temporary dyes. It adheres to the hair's cortex without significantly altering the hair's natural structure. HC Y...

HC YELLOW NO. 15

HC Yellow No. 15 is a synthetic hair dye compound primarily used in semi-permanent and temporary hair coloring products. This water-soluble colorant imparts a vibrant yellow hue to hair and is often combined with other dyes to create a range of warm shades, including gold, copper, and light brown tones. HC Yellow No. 15 belongs to the family of HC (Hair Color) dyes, which are designed to penetrate the hair shaft without the need for an oxidizing agent. This colorant is particularly effective on pre-lightened or naturally light hair, offering a temporary color ...

HC YELLOW NO. 16

HC Yellow No. 16, also known as 2-[(4-Aminophenyl)azo]-1,3-dimethyl-1H-imidazolium chloride, is a synthetic hair dye molecule primarily used in semi-permanent and temporary hair coloring products. This compound belongs to the azo dye family and imparts a vibrant yellow hue to hair strands. HC Yellow No. 16 is particularly effective in creating warm blonde and golden tones, especially when combined with other dye molecules. The ingredient demonstrates good color retention properties, allowing for longer-lasting results compared to some other temporary dyes. It ...

HC YELLOW NO. 17

HC Yellow No. 17 is a synthetic hair dye compound primarily used in semi-permanent and temporary hair coloring products. This ingredient imparts a vibrant yellow hue to hair and is often combined with other dyes to create a range of warm tones, including golden blonde and light brown shades. HC Yellow No. 17 belongs to the family of HC (Hair Color) dyes, which are designed to penetrate the hair shaft without the need for a developer or oxidizing agent. This colorant is particularly effective on pre-lightened or naturally light hair, offering a more intense and...

HC YELLOW NO. 18

HC Yellow No. 18 is a synthetic hair dye ingredient primarily used in semi-permanent and temporary hair coloring products. This compound belongs to the azo dye family and is characterized by its ability to impart yellow to golden hues to hair. Its chemical structure allows it to penetrate the hair shaft, providing color without significantly altering the hair's natural protein structure. In formulations, HC Yellow No. 18 is often combined with other dye molecules to create a range of warm tones, from light blonde to rich golden brown. Its molecular size and co...

HC YELLOW NO. 2

HC Yellow No. 2 is a synthetic dye widely used in the hair coloring industry, particularly for semi-permanent and temporary hair dyes. This water-soluble compound is known for its ability to impart vibrant yellow to golden hues to hair without the need for an oxidizing agent. Its chemical structure allows for effective penetration into the hair shaft, resulting in longer-lasting color compared to some other temporary dyes. The ingredient is often combined with other hair dyes to create a range of shades, from warm blondes to rich browns. HC Yellow No. 2 is app...

HC YELLOW NO. 3

HC Yellow No. 3 is a synthetic hair dye ingredient widely used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the azo dye family and is known for its ability to impart vibrant yellow to golden hues to hair. HC Yellow No. 3 is particularly effective in creating warm blonde shades and enhancing golden tones in brown hair. The molecule's structure allows it to penetrate the hair shaft partially, resulting in color that gradually fades over multiple washes. This characteristic makes it suitable for consumers seeking ...

HC YELLOW NO. 4

HC Yellow No. 4 is a semi-permanent hair dye ingredient widely used in the cosmetic industry for its ability to impart vibrant yellow to golden hues to hair. This synthetic colorant belongs to the azo dye family and is particularly effective in coloring lighter hair shades. HC Yellow No. 4 is valued for its stability and longevity compared to temporary dyes, typically lasting through several washes before gradually fading. In hair coloring formulations, HC Yellow No. 4 is often combined with other dyes to create a spectrum of blonde, golden, and light brown sh...

HC YELLOW NO. 5

HC Yellow No. 5 is a synthetic hair dye ingredient widely used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the azo dye family and is known for its ability to impart vibrant yellow to golden hues to hair. HC Yellow No. 5 is particularly effective in creating warm blonde and light brown shades, often used in combination with other dyes to achieve a range of hair color results. The ingredient's molecular structure allows it to penetrate the hair shaft without causing significant damage to the hair's cuticle. It a...

HC YELLOW NO. 6

HC Yellow No. 6, also known as Basic Yellow 57, is a synthetic hair dye molecule widely used in semi-permanent and temporary hair coloring products. This water-soluble compound belongs to the family of azo dyes and is characterized by its ability to impart vibrant yellow to golden hues to hair without requiring oxidative processes. The molecule's structure allows it to penetrate the hair shaft partially, adhering to the cuticle and cortex layers. This results in a color that gradually fades over multiple washes, typically lasting 4-6 weeks. HC Yellow No. 6 is ...

HC YELLOW NO. 7

HC Yellow No. 7, also known as 2-[(2-Hydroxyethyl)amino]-4,6-dinitrophenol, is a semi-permanent hair dye ingredient widely used in the cosmetic industry. This synthetic colorant imparts a vibrant yellow hue to hair products and is particularly effective in creating warm blonde and golden tones. HC Yellow No. 7 belongs to the class of nitro dyes, which are known for their ability to penetrate the hair shaft and provide longer-lasting color results compared to temporary dyes. The molecule's structure allows it to bond with hair proteins, ensuring color retention...

Ingredient Dictionary

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INGREDIENT

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