Features:1. **Waterproof and Durable**: Our Waterproof Tile Sewing Pen is designed to withstand water exposure for up to 60 minutes, ensuring your tile gaps remain protected and looking fresh for longer.2. **Mildew Resistant Formula**: Formulated with amorphous silicon and aluminum hydroxide, this pen prevents mildew growth, keeping your home clean and hygienic.3. **Easy to Use**: Simply clean and dry the surface, knead the ink, and paint along the gaps. No need for complicated tools or techniques, making it perfect for DIY enthusiasts!4. **Long-lasting Results**: Enjoy vibrant, fade-resistant colors that maintain their brightness over time, ensuring your tiles look as good as new after application.5. **Versatile Application**: Ideal for ceramic tiles in kitchens, bathrooms, and other areas, this pen is perfect for quick touch-ups or complete renovations, enhancing the overall look of your home.Our ceramic tile sewing pens contain amorphous silicon, aluminum hydroxide. It can protect the gap between the tiles, make it bright as new, after application can be exposed to water for 60 minutes, waterproof, anti-fouling, do not fade. Its use method is very simple: clean and dry the base surface, before kneading ink, after painting along the gap, do not dip in water, wait for about 1 hour to dry. And long-lasting results are guaranteed.