The TILE GROUT WHITENING PEN by BLOC is a durable and modern product designed to restore white kitchen and bathroom grout to its original colour. This anti-mould repair pen is easy to use and provides a quick solution for cleaning and rejuvenating grout in showers and other areas. With its convenient unit quantity of 1 pen, this grout pen is a practical and efficient DIY material for maintaining the appearance of your tiles.
eBay