Hair Dye: Is It Safe?
Yep..... hair dye...... For those not born with red hair but want "the look" or want to cover that gray, you're not alone! Dyeing hair is nothing new! 
Coloring hair has been a serious business for centuries! Women and men have been dyeing their hair for probably over 4000 years.
I've read that in ancient Greece harsh soaps and even bleaches were used to lighten and redden their hair, as those colors were identified with courage and honor. However, Romans in the 1st century liked dark hair and used leeks or boiled walnut to produce a dye for the job. Plus, natural henna has been used for thousands of years as well to dye hair, wool, for skin tattoos, and more.

Today, changing our hair color is a booming business, as there has been a huge increase in the percentage of women alone who color their hair compared to 4-5 decades ago. Blonde shades have always been popular, but currently RED is in and the most requested color at many beauty salons!
It's not just women, but men too are dyeing their hair and covering the gray.
 COLOR IS USUALLY CHANGED WITH CHEMICALS
(OR -- natural henna -- learn more on my 'henna' web page.).
Some beauty companies such as AVEDA are also producing botanically-based products up to 99% free of chemicals. (Visit my "Cosmetic Companies" page to read more about AVEDA.) Apparently, because AVEDA dyes are 'customized' and not just 'out of a tube' -- no 2 results may be the same. So, IF you want to dye your hair, or lighten it, get more information first and take time to think about it! Visit an experienced hair colorist for help and answer your questions.... Why? - To see if your hair can stand the color process and chemicals. (If you have chemical sensitivities, find out what chemicals are used.)
- To find out which hair care products to use later.
- To match your original red hair color if you're a natural red head who has gone gray, as it can be challenging!
- To get best results, leave it to a professional. Hair coloring uses harsh chemicals that alter the hair shaft pigment. It can also harm the hair and skin if you don’t know what you’re doing.
Anyway, PLEASE CONSIDER THE RISKS of dyeing or lightening your hair and talk with your stylist, before taking the plunge.  DYED RED HAIR IS IN FASHION, but is it worth the RISKS? (1) Possible health concerns:
The safety of hair dyes is still inconclusive with ongoing debate. Some research showed that long-term use of permanent hair dye (dark colors) could double a person's risk of some blood cancers. Some other early studies linked permanent hair dye to bladder cancer or even non-Hodgkin's lymphoma; but semi-permanent or temporary dyes seemed not to increase cancer risks. Even concerns about lead poisoning have been raised. However, other studies showed no elevated health risks or links to using hair dyes.
Those in the hair color industry say their studies show hair dye is safe. Some researchers believe it's not the contents of the dye that causes cancer but the oxidizing process that occurs and produces new chemical compounds. Most hair dyes on the market are based on and include the controversial chemical, paraphenylenediamine (PPD), now known to cause mild to very severe allergic reactions. Some European countries have banned this substance. The Center for Disease Control (USA) lists PPD as a contact allergen and exposure can be through contact with the skin or eyes, ingestion, and inhalation. Sensitization and allergic reaction can happen at any time. In 2006, it was voted as 'Allergen of the Year' by dermatologists (not a good award, by the way). It's present in many things like leather, stockings, textiles, inks, etc., so if you have an allergy, read labels and do your research to avoid it. -- IF YOU ARE PREGNANT, please read the box labels and any 'Warnings' on the hair dye products. Know what chemicals they contain. Some of these chemicals may have warnings for use by pregnant women. Do your research before you proceed.
-- IF YOU HAVE TATTOOS be aware that you could be MORE ALLERGIC to the hair dye chemicals .... MANY hair dyes have a warning on their box label about this!!!
Bottom line... if the industry can produce safer products, they should!! (2) Skin irritation or skin allergies:
Before any coloring process, do a patch test on your skin to check for any negative reaction. Manufacturers of these products often suggest applying a small amount of the dye mixture directly to your skin, usually 48 hours prior to using a product. TO TEST -- Choose a small area like behind your ear or inner forearm, cleanse it, and apply a small amount of the hair color. After about 24 hours, wash the area gently. If ANY irritation develops, do not use it. If you have itching, sores, redness, or a burning sensation immediately upon use or up to a day later, tell your colorist and stop using it (and NEVER use it again)! Be aware, however, that an allergic reaction may show up 10-14 days after skin contact. If there is no irritation or inflammation, it's assumed that no hypersensitivity to the product exists. IMPORTANT - Do a patch test before each and every hair dye application, because a sensitivity can show up at any time! (3) Discoloration of the skin:
Because hair and skin are made of the same stuff (keratin), the skin can sometimes get "colored" as well. As the skin renews itself over a few days, the temporary color should disappear. (4) Hair Breaking:
Fragile, dry hair that has been over-processed can break easily. Sometimes we just need to give our hair a break from harsh chemicals. Also, talk to your hair stylist for tips. (5) Color results are unpredictable:
This usually happens when dyeing hair at home. If this is you, consult a pro hair colorist. It can be especially unpredictable if you're going from red to blonde: Why? --- Most of the melanin in the red hair is the lighter phaeomelanin, which makes bleaching red hair to this lighter shade hard on the hair and a challenge! 
My one redhead decided to go 'blonde' and had her hair bleached. I was so upset because I loved her natural color, but it was something new she wanted to try. She endured 2 days of bleaching treatments and then had to return for root touch-ups every 6 weeks. It was really hard on her hair, and it felt dry and brittle like straw... Fortunately, her original lovely red color grew out later, healthy again! It was definitely a challenge for her stylist!! 
TIP: IF you do decide to dye your hair, some experts suggest using special color-formulated hair-care products. This is because red dye fades quicker so these special products help the shade last longer.
 MAIN HAIR DYE INGREDIENTS :
- Hydrogen peroxide -- (developer or oxidizer)
- Ammonia -- (alkaline agent, a catalyst when the hydrogen peroxide and permanent hair color come together)
- Various alcohols
- PPD (paraphenylenediamine)
 TYPES OF DYE :- Permanent color (although need to touch up roots every 4-6 weeks)
- Demi-permanent color (lasts 24-26 shampoos, can cover gray)
- Semi-permanent color (lasts for 6-12 shampoos, only enhances natural color, not cover gray)
Color can be applied to dry hair, wet hair, or shampooed into the hair.
 BEFORE YOU DYE IT: Be sure to read customer reviews, especially regarding the shades for redheads. For example, Sephora has a feature called "Customer Ratings and Reviews" on their website -- once there, go the left-sided column, find "More Ways to Shop" section and click on "Top-Rated Products" to see reviews by users....very helpful for many products they sell. I've read a few posts by redheads on what hair dye brands/products they liked.
   IF YOU DYE IT, REMEMBER: "Remember, red hair is not just a hair color, it's an attitude!" (Advice to someone wanting to color their hair red, from a natural redhead.)
 FOR KIDS: Kids' hair color is great just the way it is naturally. I personally don't recommend dyeing for children or tweens. BUT SOMETIMES for Halloween or special events, kids may want to try a crazy color like blue or green. These types of dye are meant to be temporary. But be aware it may take time before the dye washes out and your natural color returns. Plus, if done wrong without following directions closely, it can STAIN your skin. (My redhead teenager tried a shampoo-in purple hair color in the shower instead of just her head over the sink...Result? I had to stand in the shower with her and literally scrub her skin to get the stain out as she cried and I tried to comfort her, yet trying not to laugh!...wish I had the camera)..... So, use with ADULT supervision only and read the labels carefully! 
Or...Instead of hair dye, why not wear a wig?
It's easy and no damage done.
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