It is permissible in Islam for men and women to wear silver rings. There is no basis for the belief that wearing silver rings in Rajab will get one closer to Allah.

If the hair ties include hair that is mixed with the hair on the head so that it appears to be attached to it, then it comes under the heading of hair extensions which are haram. For more, see the detailed answer.

1- Plucking the eyebrows is haram and it is a major sin, because Prophet Muhammad cursed those who do it. 2- Scholars divide hair into three categories: 1- Hair which we are commanded to remove or shorten; 2- Hair which we are forbidden to remove; 3-Hair concerning which the texts are silent. For more about each category, see the detailed answer.

It is permissible for a Muslim woman to apply perfume if she is going out to a place of women and is not going to pass by men in the street.

There is nothing wrong with double ear piercing in Islam because the basic principle is that it is permissible and there is nothing to indicate that it is not allowed. For more, see the detailed answer.