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=__//**Why does the sun  lighten our hair but darken our skin? **//__ =

Here is an experiment that I thought up to answer one of my questions, "How long does it take for your hair to lighten, and does it happen to everyone?" I cut off a lock of my hair on may 3, and i kept it in a ziploc bag and in the shade. On may 20th, I cut off another lock of my hair

For the picture taken on the 20th, it tools like it has more luster, although it also looks a bit bleached out. My hypothesis is that it would probably take longer than 17 days for your hair to be visibly lighter. No one has studied how long it takes for this process to take place before.There is only a slight color difference.

Soem people that I interviewed:

Abel Elizabeth A MD **

2660 Grant Rd # D  Mountain View, CA  94040 (650) 938-6244


 * Dr. Greg S. Morganroth **

Orchard Creek Medical Center 525 South Drive, Suite 115 , Mountain View , CA 94040 (650) 969-5600‎ (650) 969-0360‎ - Fax [|mohsdoctor.com] [|Murase, Jenny] Dermatology Mountain View (650) 934-7676

Here are some of my secondary sources:

http://answers.yahoo.com/question/index;_ylt=ApR59USrJrT7pvzXlaLOq6EjzKIX;_ylv=3?qid=20080404151234AA8aFwh http://answers.yahoo.com/question/index?qid=20070426203834AAYJHjs&show=7

Dermatologist: the study of skin cosmetically and non cosmetically Tricology: the study of the shape and texture of hair

**Interview questions:**
1.Do you know why the sun lighten our hair but darken our skin? 2.What is pigmentation? Does it play an important told in my question? 3.From the sun, is it just the sunlight that causes this, or something else too, like UV rays? 4.Can this be prevented? 5.What is Melanin? 6.Does this happen to everyone? 7.Is there any other substance or source that can cause this? 8.Would lamp light or any other type of light other than the sun cause this? 9.For some people, the ends of their hair are lighter than the rest. Is this because of the process? 10.Where does your hair start lightening? At your roots, tips, or in between? 11.How long does it take for this process to happen? 12.Is this process unhealthy for you hair?