Puffy Effect: Heat up the paint with a blowdryer and it pops up like real popcorn! Unique Art : Great for art , customizing greeting cards, birthday cards and coloring books. : Create design and watch it transform with heat. Wide Application: Can be used on paper, glass, plastic and other surfaces. Safe: No harmful chemicals, safe for children. Product Description: USAGE Preparation Tools: popcorn pen, paper, hot hair or microwave oven Step 1: Paint anything as you like on the paper Step 2: Heat the painting with a Hair dryer at least 2 minutes. Or put the painting into the microwave over for heating about 2-3 minutes, Can not wait blow dries Step 3: Take his DIY work, it with your ! SPECIFICATIONS Material: Environmental argillaceous Size: 10 cm x 3 cm x 3 cm Volume: 10ml/pc Package: 6 PCs of Drawing Pens NOTES Please allow slight measurement deviations due to manual measurement. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed in the pictures.