What is the ruling on using the same towel or loofah after performing ghusl following menstruation, if they were used during menstruation? Are they considered impure or pure?

The body of a menstruating woman and her sweat are pure by scholarly consensus. Anything she uses to dry her body or rub against it does not become impure because it has not touched an impure body. Therefore, there is no harm in her using those items during her days of purity, unless she is certain that impurity has contaminated them.