Is food dye one kind of synthetic dye??? Please be sure, this is very important to me, thank you?
813701
Food dyes can be both according to the FDA.  From the FDA website:\n\n"Technically, a color additive is any dye, pigment or substance that can impart color when added or applied to a food, drug, cosmetic or to the human body. \n\nThe Food and Drug Administration (FDA) is responsible for regulating all color additives used in the United States. All color additives permitted for use in foods are classified as "certifiable" or "exempt from certification" (see Table I). \n\nCertifiable color additives are manmade, with each batch being tested by manufacturer and FDA. This "approval" process, known as color additive certification, assures the safety, quality, consistency and strength of the color additive prior to its use in foods. \n\nThere are nine certified colors approved for use in food in the United States. One example is FD&C Yellow No.6, which is used in cereals, bakery goods, snack foods and other foods. \n\nColor additives that are exempt from certification include pigments derived from natural sources such as vegetables, minerals or animals, and man-made counterparts of natural derivatives."
363410
I have found some RAW, ORGANIC, LIVE, WHOLE FOOD in powder form.  I have had allergies but they went away when I began taking this stuff made of totally organic vegetables, fruits and other ingredients.  Send me an email privately and I will tell you more if you wish.  \n\nzhebee
103875
Well, I'll just take a guess.  Synthetic textiles are petroleum-based or made from some other non-plant product.  They are essentially fibers of plastic such as polyester and nylon.
626718
POSTER colour and PASTEL colour?... Yes, and they're both the same as PASTA colour and tooth PASTE colour
444163
Are they sugar free?  If not, think of your teeth and your weight.  Also all that food dye isn't good either!
1098933
I can't give you any websites but I would suggest that you research ancient dyeing techniques....for instance the use of some plants to produce indigo....
769133
I'm not a bio expert, but as a licensed cosmetologist, I can tell you that dye does affect microscopic characteristics of hair, because the permanent dyes are a mixture of color molecules in an ammonia base, which is mixed with developer, H2O2, or 20 volume hydrogen peroxide, just before application. The H202 lifts the cuticle of the hair, which is the overlapping scales on the outside of the hair shaft, and removes some of the natural pigment (bleaches a bit) from the cortex, and the mixture then deposits the new artificial color molecules into the cortex. The medulla, or innermost layer of the hair, is not usually affected, but in cases of severe chemical damage, it can be. The hair shaft itself sort of resembles a tree under a microscope, the outer layer, the cuticle, resembles "bark" or overlapping scales, the cortex resembles the "pith" of a tree or plant stem, and the medulla is a very thin "core" in the center. You'll see "damage" to the hair shaft of dyed hair, as those cuticle scales have been lifted, and some become missing from the chemical damage.  The difference between dyes, is a permanent color (dye) removes natural color, and re-deposits new color, a semi-permanent color does not mix with H202, and "stains" the outer layers of the hair, and washes off after several shampoos. There can be no temporary lightening of hair with a semi-permanent color, because in order to go to lighter hair, the natural pigments must be removed, and that takes peroxide / ammonia based products. \nI hope someone with more of a chemistry / biology background can fill in the details for you, but I hope I have at least given you an understanding of how hair is changed by dyes.  (similar changes / damage occur with perms and straighteners) Good Luck.
522216
Food colouring and bleach.
83760
This website has a nice step by step explanation of how to make dye using plants:\nhttp://www.pioneerthinking.com/naturaldyes.html\nThis site has a listing of common plants that can be used for dye and a more detailed explanation of how to make the dye.\nhttp://www.kidsgardening.com/growingideas/projects/may03/pg1.html\nHope this is helpful :-)
597210
I just saw a segment on tv about Hoodia. It is a leaf of a plant that African warriors eat while out on a hunt, because it suppresses their appetite..so in that situation it works. HOWEVER, the doctor who I saw on this segment said that you have to be sure you are getting authentic Hoodia because some companies are passing off other things as Hoodia. He didn't explain, or I don't remember him explaining, how you could tell. My opinion is this, the good old fashioned exercise and change of diet is your best option for weight loss. How did all those women back in the day remain so thin and healthy without Atkins, South Beach or Hoodia? :::::shutter:::::
1167044
You really need to be specific here.  Everything is a chemical - the food we eat, the air we breathe, etc.
908520
No, it will not make you sick. Your skin may absorb some f the dye but it won't harm you. They're supposed to be non-toxic.
551086
A dye can generally be described as a colored substance that has an affinity to the substrate to which it is being applied. The dye is usually used as an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber. In contrast, a pigment generally has no affinity for the substrate, and is insoluble.\n\nArchaeological evidence shows that, particularly in India and the Middle East, dyeing has been carried out for over 5000 years. The dyes were obtained from either animal, vegetable or mineral origin, with no or very little processing. By far the greatest source of dyes has been from the plant kingdom, notably roots, berries, bark, leaves and wood, but only a few have ever been used on a commercial scale.\n\nOrganic dyes\nThe first man-made organic dye, mauveine, was discovered by William Henry Perkin in 1856. Many thousands of dyes have since been prepared and, because of vastly improved properties imparted upon the dyed materials, quickly replaced the traditional natural dyes. Dyes are now classified according to how they are used in the dyeing process.\n\nAcid dyes are water-soluble anionic dyes that are applied to fibers such as silk, wool, nylon and modified acrylic fibers using neutral to acid dyebaths. Attachment to the fiber is attributed, at least partly, to salt formation between anionic groups in the dyes and cationic groups in the fiber. Acid dyes are not substantive to cellulosic fibers.\n\nBasic dyes are water-soluble cationic dyes that are mainly applied to acrylic fibers, but find some use for wool and silk. Usually acetic acid is added to the dyebath to help the uptake of the dye onto the fiber. Basic dyes are also used in the coloration of paper.\n\nDirect or substantive dyeing is normally carried out in a neutral or slightly alkaline dyebath, at or near boiling point, with the addition of either sodium chloride (NaCl) or sodium sulfate (Na2SO4). Direct dyes are used on cotton, paper, leather, wool, silk and nylon. They are also used as pH indicators and as biological stains.\n\nMordant dyes require a mordant, which improves the fastness of the dye against water, light and perspiration. The choice of mordant is very important as different mordants can change the final colour significantly. Most natural dyes are mordant dyes and there is therefore a large literature base describing dyeing techniques. The most important mordant dyes are the synthetic mordant dyes, or chrome dyes, used for wool; these comprise some 30% of dyes used for wool, and are especially useful for black and navy shades. The mordant, potassium dichromate, is applied as an after-treatment.\n\nLook up leuco form in Wiktionary, the free dictionary.Vat dyes are essentially insoluble in water and incapable of dyeing fibres directly. However, reduction in alkaline liquor produces the water soluble alkali metal salt of the dye, which, in this leuco form, has an affinity for the textile fibre. Subsequent oxidation reforms the original insoluble dye.\n\nReactive dyes utilize a chromophore containing a substituent that is capable of directly reacting with the fibre substrate. The covalent bonds that attach reactive dye to natural fibers make it among the most permanent of dyes. "Cold" reactive dyes, such as Procion MX, Cibacron F, and Drimarene K, are very easy to use because the dye can be applied at room temperature. Reactive dye is by far the best choice for dyeing cotton and other cellulose fibers at home or in the art studio.\n\nDisperse dyes were originally developed for the dyeing of cellulose acetate, and are substantially water insoluble. The dyes are finely ground in the presence of a dispersing agent and then sold as a paste, or spray-dried and sold as a powder. They can also be used to dye nylon, triacetate, polyester and acrylic fibres. In some cases, a dyeing temperature of 130 °C is required, and a pressurised dyebath is used. The very fine particle size gives a large surface area that aids diss
158766
Real flavor extracts vs. Imitation flavors is very informative.\nAqueous or Organic extracts of common spices, as either a paper or TLC experiment is interesting.\nFall leave colors extracted is more difficult but relates to everyday observations.
43926
Cloth, especially made of natural fibers that have been dyed, will always fade.  This is what I found on the website noted below:\n\n"You’ll find that over time, some clothes fade or change colour more quickly than others. It all depends on the type of dye used to colour them. Ordinary dyes such as natural dyes just stick to the molecules that make up the material and so don’t last as long. But the newest class of dye, ‘reactive’ dyes such as azo dyes, become part of the molecules that make up the material and therefore are remarkably colour fast.\n\nCertain factors such as bleach, which can sometimes be found in washing powder, sunlight, artificial light, or even atmospheric gases all speed up the rate your clothes fade. Unfortunately this fading is permanent and the only way you will get your clothes looking blacker than black again is to re-dye them."
781918
1.  There are some additives used in cake mixxes that make a better product. I do not think that color should be added to things. Some people are allergic to the colors. (my husband and my dog) There are natural colors that can be used. Beet juice for instance for red.There are natural flavorings that can be used. \n2. Some additives are preservatives and they do make food last longer and prevent food poisoning. There has been research into ADD and ADHD being affected by food additives, particularly colors. \n3. Some people are allergic to MSG ised to enhance flavor. (me) it is the cause of "Chinese Restaurant" headache\n4. On the whole they are not potentially harmful, but I think we could use far fewer.We could stick to natural ones.
149172
This was on myth busters and that dye is just a myth. Do not ever poop in a pool you could get other people sick...Gross