I have hair and it mean i am one of the  1–2% of the human population that have it
Oh really? Is there a huge population of invisible people without hair? 
Well, it appears most commonly in people with two copies of a recessive allele on chromosome 16 which produces an altered version of the MC1R protein. Do you understand my biology terms. 
Of course. However, I take issue with your statistics. If only 1-2% of people have hair, there must be many more people with the dominant allele for hairlessness, yet everyone I see has hair.
For a deeper explanation, Red Hair is characterized by high levels of the reddish pigment pheomelanin and relatively low levels of the dark pigment eumelanin.
Ah, so I believe there was perhaps a typo in your first sentence. You stated, "I have hair and it mean i am one of the 1-2% of the human population that have it). I believe what you meant was that you are a member of the 1-2% of humans who have red hair, caused by the homozygous recessive gene for red hair found on chromosome 16, thus altering your MC1R protein and giving you a red-haired phenotype. 
Yes, you are right. DO you know anything abou t the Hair color. It is is the pigmentation of hair follicles due to two types of melanin
Yes, it's similar to skin color in that it's caused by the amount of melanin produced. I believe, like skin, differing amounts of melanin can be produced depending on levels of UV radiation exposure