Do Muji Pens Bleed Through Books? A Comprehensive Review

With their minimalist aesthetic and reliable performance, these pens have become a staple in the world of writing instruments. One common question that often arises among avid users is whether Muji pens bleed through books. As individuals seek to preserve the integrity of their cherished novels, journals, or textbooks, understanding the potential ink permeation is crucial.

Are Muji Pens High-Quality?

Muji pens are known for their high-quality ink, which ensures smooth, consistent writing. The ink flows effortlessly onto the paper, making it a pleasure to use these pens for extended periods of time. Whether you’re jotting down quick notes or writing a lengthy essay, Muji pens won’t disappoint.

Durability is also a major advantage of Muji pens. These pens are built to last, with sturdy materials and superior craftsmanship. You can rely on them to withstand the demands of daily use without any issues. From the nib to the barrel, every component of the pen is well-engineered and constructed for long-lasting performance.

Furthermore, Muji pens offer a wide range of tip sizes, catering to different writing preferences. Whether you prefer fine, medium, or bold lines, you can find a Muji pen that suits your needs. This versatility makes them suitable for various purposes, such as note-taking, drawing, or even calligraphy.

Their effortless writing experience, durable construction, and affordability make them a top choice for both casual users and professionals alike.

Tips for Using Muji Pens for Artistic Purposes, Such as Sketching or Coloring.

  • Experiment with different line weights and pressure on the pen for varied effects.
  • Blend colors by layering them or using a water brush with the water-soluble Muji pens.
  • Create shading and gradients by varying the angle and pressure as you apply the pen.
  • Try cross-hatching techniques for adding texture and depth to your drawings.
  • Utilize the fine tip of the pen for intricate detailing and precise linework.
  • Explore different paper textures to see how the ink interacts and enhances your artwork.
  • Experiment with different pen colors to add vibrancy and interest to your sketches or coloring pages.
  • Take advantage of the water-resistant nature of the ink for mixed media projects.
  • Allow the ink to dry completely before erasing any pencil lines to avoid smudging.
  • Practice with the pens regularly to develop your own unique style and technique.

However, my personal experience with Muji gel pens has shown that they do have a tendency to smudge when highlighted over. This can be frustrating for those who rely on both writing and highlighting in their note-taking or journaling. In this article, we will delve deeper into the issue and explore possible solutions for minimizing smudging with Muji gel pens and highlighters.

Do Muji Pens Smudge With Highlighters?

This is because the ink used in Muji gel pens is water-based, which makes it more prone to smudging when exposed to moisture. Highlighters contain alcohol-based ink, which can react with the water-based ink of the pen and cause smudging. When the highlighter is dragged over the freshly written ink, it breaks down the gel ink and spreads it, leading to smudging.

This means that over time, the ink may fade or lose it’s vibrancy. However, this can be a subjective concern as some individuals prefer the natural aging process of the ink, which can create a vintage or aged effect.

Despite these concerns, Muji gel pens are still beloved by many for their smooth writing experience and affordable price point. They’re known for their consistent ink flow and comfortable grip, which makes them ideal for long writing sessions. The wide range of color options also appeals to many users who enjoy adding a pop of color to their notes or artwork.

Allowing the ink to dry fully before highlighting and experimenting with different highlighter brands can help avoid this issue. Additionally, it’s worth considering the pens lower resistance to water and light, particularly if long-term durability is a top priority.

Tips for Preventing Smudging When Using Highlighters With Water-Based Pens.

  • Allow the ink from your water-based pen to dry completely before highlighting over it.
  • Use a blotting paper or tissue to remove excess ink from the page before highlighting.
  • Avoid touching the highlighted area immediately after highlighting to prevent smudging.
  • Hold the highlighter perpendicular to the paper to reduce the chances of smudging.
  • Apply light, quick strokes when highlighting to prevent the highlighter ink from pooling and smudging.
  • Avoid using too much pressure when highlighting to minimize the risk of smudging.
  • If you accidentally smudge the highlighter, gently blot the area with a clean tissue to remove excess ink.
  • Consider using a smudge-proof or quick-drying highlighter specifically designed for water-based pens.
  • Allow the highlighted text to dry completely before closing the book or turning the page.

Additionally, you can also try using a blotting paper or tissue to absorb any excess ink and prevent smudging.

How Do I Stop My Muji Pens From Smudging?

Another way to prevent smudging is to avoid drawing or writing on glossy or coated paper surfaces. These types of paper tend to have a smoother and shinier finish, which makes it more challenging for ink to fully adhere and dry. Opt for matte or uncoated paper, which have a slightly rougher texture that allows the ink to absorb better and dry faster.

When using Muji pens, try to apply consistent pressure while writing or drawing. Uneven pressure can cause the ink to spread and smudge. Also, avoid pressing too hard on the pen tip, as this may result in excessive ink flow that can lead to smudging as well.

Lastly, consider the environment in which you’re using your Muji pens. Humid conditions can make it more challenging for ink to dry quickly. Ensure that the area is well-ventilated, or use a fan to create airflow to aid in drying. Additionally, avoid touching the ink until it’s completely dry, as oils from your skin can transfer onto the paper and disrupt the drying process.

Remember to be patient and allow ample drying time to ensure the best results.

How to Clean Smudged Muji Pens

  • Gather all your smudged Muji pens.
  • Prepare a soft cloth or tissue paper.
  • Dampen the cloth or tissue paper slightly with water.
  • Gently rub the smudged areas on the pens with the damp cloth or tissue paper.
  • Continue rubbing until the smudges are removed.
  • Inspect the pens to ensure all smudges are gone.
  • If there are any stubborn smudges, repeat the process or use an eraser gently.
  • Once all the pens are clean, let them air dry or wipe them dry with a clean, dry cloth.
  • Store the clean Muji pens in a safe place to prevent future smudging.


Ultimately, it’s advisable to test the pens on different types of paper before using them extensively in order to determine their compatibility and minimize potential bleed-through issues.

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