🕵️♂️ Uncover the fun with every stroke! Harmless ink for worry-free creativity. Write on paper, cloth, or even skin! Transform ordinary messages into secret codes! A delightful gift for any occasion. Perfect for unforgettable spy-themed celebrations. 7 vibrant colors UV light reveal 28PCS set The GIFTINBOX Invisible Ink Pen set includes 28 magic pens in 7 colors, designed for kids to write secret messages that can only be revealed with the UV light. Safe and washable, these pens are perfect for parties, classroom prizes, and creative play, making them an ideal gift for various occasions.