Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Other Functional Pens |
| Origin | - |
| Brand | Liupintang |
| Ink Type | Thermochromic Disappearing Ink |
| Capacity | Jumbo High-Capacity (2.0ml) |
| Tip Size | 0.5mm Medium Point |
| Ink Color | Blue (Fades to Clear) |
| Compatibility | Magic Groove Copybooks & Standard Gel Pens |
| Pack Quantity | 10 Refills per Pack |
| Material | Non-toxic Plastic Barrel |
| Fade Time | Approx. 30-60 Minutes at Room Temp |
| Recommended Age | 3 Years and Up |
Anonymous
Mar 30, 2026
Rating: 4/5
Good fit for standard pens
These fit perfectly into my existing magic pens. The ink density is good, not too watery. Only giving 4 stars because the fading isn't instant, but that's expected with this technology.
Anonymous
Mar 13, 2026
Rating: 5/5
Smooth writing experience
I was worried these might skip or feel scratchy, but they write just like regular gel pens. The disappearing feature is magical for kids learning to write characters. Highly recommend!
Anonymous
Mar 07, 2026
Rating: 3/5
Works but needs warmth
The refills work as advertised, but you definitely need friction or a warm room for the ink to vanish completely. If it's cold, the writing stays visible for hours. Still useful for practice though.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect for practicing handwriting!
These refills are a lifesaver for my daughter's copybook practice. The ink fades quickly enough that she can reuse the same page multiple times without wasting paper. The flow is smooth and consistent.
Anonymous
Mar 05, 2026
Rating: 5/5
Eco-friendly practice solution
Love that we can reduce paper waste with these. My son uses them daily for his groove copybook, and the refills last a long time. No mess, no stress.
Anonymous
Mar 01, 2026
Rating: 4/5
Great capacity, slight delay in fading
The jumbo size means I don't have to change refills often. In cooler weather, the ink takes a bit longer to disappear, but it still works well overall. Good value for the price.
Q: Can I use these refills on regular paper?
A: Yes, you can use them on regular paper, but the disappearing effect relies on heat and friction. On thick or coated paper, the fading process might be slower compared to the specialized groove copybooks.
Q: How long does it take for the ink to disappear completely?
A: Under normal room temperature (around 20-25°C), the ink typically fades within 30 to 60 minutes. Friction from erasing or warmer temperatures can speed up this process.
Q: What happens if I store these refills in a hot car?
A: Extreme heat may cause the thermochromic ink to become clear prematurely inside the refill tube. We recommend storing them in a cool, dry place away from direct sunlight to maintain ink visibility until use.
Q: Do these refills work in standard gel pens or only specific magic pens?
A: These refills are designed primarily for magic groove copybook pens, but they fit most standard gel pen barrels with a 0.5mm tip compatibility. Please check your pen's refill dimensions before purchasing.
Q: Is the ink safe if a child accidentally ingests a small amount?
A: Our ink is made from non-toxic materials and is safe for general use by children. However, it is not intended for consumption. If ingestion occurs, please consult a medical professional immediately.
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