The ink will adhere to all types of strings. However, due to the impermeability of polyester strings, the ink does not get enough “bite” on this type of string and can wear off sooner than on the other types of strings.
The ink is manufactured for us specifically for application to tennis strings. It is fast drying and very durable.
Each bottle contains a mohair, felt-tip applicator that is rubbed on the strings to apply the ink.
Each one ounce bottle contains enough ink for between six and eight applications. However, once opened, the ink on the applicator can dry up limiting the shelf life of the bottle.