This invisible ink pen is designed for children to write secret messages that are invisible until revealed by light. How it works: Write with the pen, then shine a light on the writing to reveal the message. The appearance of the letters happens when exposed to light, offering a magical beforeandafter effect. Clear benefits for your child: Encourages creativity in writing, sketching and drawing through secret messaging. Provides interactive, engaging play that blends storytelling with art. Makes a fun and thoughtful party gift that sparks imagination and group activities. Practical use scenarios: Party games and scavenger hunts: hide messages around the venue and reveal clues with light to guide players. Classroom or home activities: create secret notes, illustrated stories or collaborative drawings that come to life when revealed. Family game nights or sleepovers: exchange hidden messages and drawings for a playful, educational activity. Key attributes: Function: invisible ink writing that is revealed by light. Compatibility: suitable for children and ageappropriate creative play. Size: handheld and compact for easy use by kids. Performance: designed to produce readable secret messages when illuminated, enhancing the fun of writing and drawing. What's included: one invisible ink pen for children, suitable for creative writing, sketching and drawing projects.