Archive page problem

this is causing a duplicate meta description in google webmaster tool

If you have two or more pages with duplicate meta description, you surely will have the above problem. Do you have more than one page with the same meta description? If the theme lists the same page twice, it will not create the problem.

A better option would be to have a static front page, and the rest of the posts named as blog (or anything you like).

only 2 pages have same meta description one is https://www.cosmetics.pk homepage 2nd is https://cosmetics.pk/page/1/ and second thing is that when you goto https://cosmetics.pk/page/2/ just mouse hover on page 1 from the bottom in pagenavi it will show you the homepage link rather than this https://cosmetics.pk/page/1/

Which are the two pages showing the same meta description? Are they https://cosmetics.pk/page/1/ and https://cosmetics.pk ?

yes brother, even https://cosmetics.pk/page/2/ 3 4 5 6 7 8 9 and so on are fine.

Did you create the page/1 yourself or was it created automatically by your theme?

It was created automatically by theme dear