on saleNoodler's Blue Ghost - 4.5oz Bottled Ink with Free Charlie Pen

Product Code N19809

In Stock

out of stock

on saleNoodler's Blue Ghost - 4.5oz Bottled Ink with Free Charlie Pen

Product Code N19809

In Stock

out of stock


4.5 oz bottle of Noodler's Blue Ghost fountain pen ink. Invisible during the day, glows under black light! Comes with a free Noodler's "Charlie" eyedropper fountain pen. Noodler's inks are handcrafted, so there may be slight color and glow intensity variations from batch to batch.

Note: As this ink is virtually transparent, you may be able to see some particles that would be indistinguishable within opaque inks. We’re told that these particles are normal with this ink.

Bottled Ink
Bottle Material
Bottle Opening Diameter
14.3mm (0.56in)
Fast Drying

Whether or not the ink contains glittery particles.

Freeze Resistant

Whether or not an ink is specially formulated to better withstand freezing temperatures.

Iron Gall

Ink made from iron salts and tannic acids. Though quite permanent and waterproof, these inks are typically known for causing chemical corrosion to metal pen parts (especially the nib) and should be used sparingly or with less-valuable pens.


Whether or not an ink is specially formulated to increase flow in your pen.


Whether or not the ink contains finely-ground solid particles in liquid suspension.

Water Resistant

Whether or not the ink, once dried on the paper, will resist being washed away with water.


Customer Reviews

Based on 119 reviews
Amy P.
Great invisible ink!

I purchased this to use with a handout for a roll playing game. I designed the puzzle and then put the clues in using this ink. The players had no clue that the mysterious writing is on the handout, because they haven't hit the ink with UV light yet. I did while testing the ink and it shows up great! I got the idea after watching a YouTube video with an artist who adds a second drawing on top of the first using Noodler's Blue Ghost ink. He said it was the best to use because it showed up really well under UV light, but also didn't react to most inks negatively. This way his original drawing was not affected when he placed the second, hidden drawing on top of it. I would highly recommend this ink if you have an application for it. I haven't tested it for water resistance, and it's difficult to test shading on it.

Andrew C.
Really cool ink

Love it! Maybe not the most practical day to day ink, but if you have a use case for invisible ink that shows up clearly under a good UV, you won't be disappointed! The included Charlie pen ensures you have a pen that you can dedicate to the ink without traces of another color, and the clear barrel means you'll know when you're out of ink ...which, with invisible ink isn't as much of a given as with most! :). The fact that it's more bulletproof than most of my visible inks is ironic as heck, and an added plus .

Tina V.
Lots of fun for secret messages!

Loved the blue ghost noodlers ink. It dries completely transparent so you cannot see at all where you've put down the ink and Glows super bright under a black light. I've been enjoying writing secret messages for my DandD campaign. The free pen that came with the 120mL not so good, leaked and broke in the first use

For use in sketchbooks... cont.

The real reason I bought this ink was to keep my sketchbooks looking nice. I was gifted some fairly low GSM Masters Touch sketchbooks and unfortunately I can see my drawings through the pages. Heck, I can see dark areas through the next page! Only drawing on one side of the page makes the sketchbooks look cleaner especially with ink but it feels like such a waste of space. Then I saw this and I think my pictures speak for themselves. The Blue Ghost ink looks fantastic in the sketchbooks I bought it for. It doesn't bleed through on most papers. I actually wrote on both sides of the white paper in the picture. It behaves like my standard India inks except it remains wet longer in my opinion which is nice when using dip pens. Cons:This ink bleeds through very thin paper. It feathers with wide tooth paper. The ink did leave a disruption in my more textured toned sketchbook so you could see something is written there but without a black light it would be pretty difficult to read.Overall, I am very satisfied with my purchase. Noodler's Blue Ghost ink does what it is advertised to do. The Charlie pen that comes with it is a nice bonus though it does glob occasionally usually when I first start writing with it. I've only used a small amount of fountain pens but I think this is fine for my invisible ink. Most people probably won't see the mess ups anyway right?

Cool spy ink !

You have to clean your pen really good before using this ink. This is a ' transparent ' ink, any old ink residue on your pen will mix and this won't be invisible anymore. Works great with a broad nib because you don't have to press on the paper for the ink to flow. Leaves no visible traces on the paper. Love it ! I feel like James Bond when I write with this ink!

FAQs about Bottled Ink

Which pens can accept this ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Any of these fountain pens will work with bottled ink. Typically, as long as the pen can be filled with a converter, has a built-in filling mechanism like a piston, or can be eyedropper-filled, it can accept bottled ink.

What is shading, sheening, or shimmering ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Shading - A common (and often desired) result of a fountain pen ink pooling in certain parts of a letter when writing, so that the color and saturation of the ink appears different within a single letter or word. This characteristic cannot be achieved with ballpoint or rollerball pens and is a very appealing aspect of fountain pen use for those particularly drawn to all the pretty ink colors.

Sheen - Characteristic of a fountain pen ink where when ink pools another color can be seen on top of the ink, especially when looked at in different light angles using certain paper types. There is no way to guarantee an ink will sheen, but using a larger nib on a pen will help obtain sheening results in your writing.

Shimmering - Fountain pen ink that has small particles of glitter mixed in.

Is shimmering ink safe to use in fountain pens? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Yes! Shimmering ink is a great way to add some flare to your writing. We have found that a larger nib will showcase more shimmering particles while writing, but you can use any nib size and shimmering ink. All the ink we sell is safe for use in fountain pens.

You can learn more in our blog: How to Write with Shimmering Ink.

My ink smells funny, is it safe to use? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Generally yes! Ink does not smell good- it usually has a chemical smell, along with other scents such as sulfur, rubber, chemicals or even paint. However, as long as you’re not seeing anything floating in the ink, it should be safe to use.

It’s cold and my ink froze; is it safe to use? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Yes, frozen ink will not hurt your pen (after it’s thawed of course!) The issue with ink freezing is primarily a concern because certain glass bottles could break as the water-based ink expands, and then you’d have a mess!

What is your return policy for bottled ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We do not accept returns for ink that has been used. Otherwise, we accept returns on unused ink products for up to 30 days from purchase. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.