Fourstar Invisible Ink Pen for Kids - Secret Message Pen with Hidden Ink Revealer - Magic Writing Tool for Kids - Fun Educational Toy for Boys and Girls - Mermaid Invisible Ink Pen for Kids: This secret pen is perfect for kids who love to write and draw, but want to keep their creations private. The ink is invisible until it's exposed to heat, making it a fun and exciting way to create secret messages and notes. Easy to Use: This invisible ink pen is easy to use and doesn't require any special skills. Just write or draw with it as you would with any other pen and the ink will disappear when you apply heat. Long-lasting: This invisible ink pen is designed to last for a long time, so you can enjoy creating secret messages and notes for weeks or even months. Fun and Educational: This invisible ink pen is not only fun, but it's also educational. It helps kids develop their creativity and fine motor skills, while also teaching them the importance of privacy and confidentiality. Perfect for Parties: This invisible ink pen is perfect for parties and other celebrations. Kids can create secret messages and notes for their friends and family, making the party even more exciting and memorable.