Dyes, colorants in which the coloring matter is dissolved in liquid, are absorbed into the material to which they are applied. Pigments, consisting of extremely fine particles of ground coloring matter suspended in liquid, form a paint film that is bonded to the surface it is applied to. Dyes are sometimes precipitated onto an inert base and ground into pigments.

We have found that the best thing to do is rinse or spray the fabric with plain water to wet out the fabric. This ensures that all the dye molecules are attached and any excess are rinsed away. This also insures that any excess chemical is removed. The fabric coating acts like a magnet and can attract dye that doesn't belong. See similar questions...

We only use oxide pigments in our systems. Oxide pigment do not break down with UV exposure. Organic pigments break down with UV exposure. Organic pigments are suitable for interior applications but are not suited for non-fading, long term exterior exposure. Oxide pigments tend to be more “earthy” colours compared to bright and strong organic pigment colours. See similar questions...

We think so. Dyes are synthetic, often unstable and sooner or later (usually sooner), they will fade. At Magnolia we have a deep concern for permanence and durability. In both traditional and digital printmaking we use pigments, not dyes. Historically, pigments (derived from minerals) have stood the test of time. From the paintings of cavemen to the first Gutenburg Bible, from Rembrandt to Sam Francis, all lasting images have been made with pigments. See similar questions...

The dyes applied in the classic fashion for margins are applied to the perimeter of the surgical specimen before it is cut or sectioned or otherwise altered. The dye adheres to the periphery and once the sectioning is complete, anyplace where dye is located is a tissue margin. Many tumor margins today are not examined in the perpendicular fashion, but in the tangential fashion as originally described by Frederick Mohs. In these applications, anything on the slides represents tumor at the margin. See similar questions...

According to the Federation of European Aquaculture Producers, in biology, any substance that can impart colour to the tissues or cells of animals or plants can be called a pigment. The term carotenoid is the generic name for one of the most common groups of naturally occurring pigments found in the animal and plant kingdoms. To date, over 600 carotenoids have been identified in nature, varying in colour from yellow to red. See similar questions...

Yes. Pigments containing iron oxide helps the color last longer and is less likely to cause allergic reactions compared to organic or vegetable based pigments. See similar questions...

No, KP micropigment colors should NOT be used for body tattoos. KP PMU pigments were created for permanent cosmetics specifically, NOT for deeper penetration into the skin as done in body tattooing. Traditionally, tattoo pigments are a lot more water based for deeper penetration. See similar questions...

DermaSilk is manufactured using pure un-dyed silk. It is only available in its natural light cream colour. See similar questions...

Arctic is the name of the exciting line of Shepherd Color pigments that reflect the sun's infrared energy. These pigments allow the formulation of dark-colored systems that minimize heat build-up and meet Energy Star requirements for solar reflectivity. See similar questions...

Soap pigments are used to give handmade soaps their color. Soap pigments, such as oxides, used to be mined from natural sources, however, now they are generally made in laboratories. See similar questions...

Experts recommend that if you have vitiligo, you should avoid hair colorings and bleaches. Chemicals in these products called Phenols may cause the onset or further spreading of vitiligo. Temporary hair colourings however, such as henna, which do not contain phenols or phenol derivatives, are generally accepted as safe. When in doubt, you should consult with your physician. See similar questions...

Pigment dye is a solid color dye that creates an even color throughout the hide. It is applied after the aniline process. See similar questions...

Certifiable color additives are available for use in food as either "dyes" or "lakes." Dyes dissolve in water and are manufactured as powders, granules, liquids or other special purpose forms. They can be used in beverages, dry mixes, baked goods, confections, dairy products, pet foods and a variety of other products. Lakes are the water insoluble form of the dye. See similar questions...

If you have really bad stains, or white marks from bleach or other chemicals, carpet dye may be the solution. Dyes come in either spray cans or bottles that are mixed with water. In my experience, spray can dyes often leave a crusty, rough surface on the fabric or carpet, but newer products might be better. See similar questions...

The application is just deep enough to penetrate the minute capillaries in the dermal layer of skin. There have been so few reactions to the pigments that some doctors are suggesting that the patch test be eliminated. You can develop an allergy to anything, anytime. Some doctors recommend that people with allergies have permanent cosmetic procedures because they can replace cosmetic products that they are sensitive to. See similar questions...

No. AR-GLO dyes have been proven safe by tests in accordance with the stringent ASHRAE standards 97 and 86. They never need to be removed from the AC&R system. In fact, they are specially designed to remain in the system so you can easily confirm if your repair was successful as well as for routine maintenance checks in the future. Top of Page See similar questions...

We do not recommend that the dyes be diluted as dilution would jeopardize the adherence quality of the product. It has been suggested by some of our customers that dilution with water at very small ratios is adequate without affecting the quality to a large degree. Once the product has been diluted, we cannot guarantee it's performance quality. top It is not recommended that the dyes be frozen as some of the dyes (particularly the red and the black) are less adherent after they have been frozen. See similar questions...

In my opinion, the most comprehensive for watercolor is Hilary Page's Guide to Watercolor Paints. Another recent book that is very informative is David Pyle's Paint & Colors: What Every Artist Needs to Know, new this year. The book is comprehensive, covering most media and including the history of pigments to the behavior of paints and safety issues. See similar questions...