Unfortunately that question is too big an ask !
I mean yes the Tombows are nice to use but they do fade. The Kuretake No.10 Tegami Fude Letter Pen is OK. but again the ink is dye based – so they do fade too.
The Talens Eco line are likewise are very nice to use but the colour will fade (& they fade fast !).
The problem is that the coloured brush pens use dye based ink colours which are vibrant & handle well BUT are not permanent (can be very impermanent !). Whereas pigment colours are poor handling & lack vibrancy but are permanent .
If you will bite the bullet & accept the lack of permanency the Talens Eco line are the gold standard & almost universally accepted as being the best in use & yet unfortunately they are not very lightfast at all.
Sorry to be the bearer of bad news but – You cannot have your cake & eat it !
There is no way around this problem I’m afraid ……. Well you could use watercolour paint & a standard brush but that is maybe not what you want to do. If you want to hang them on the wall,then a compromise must be made.
Mike

If the pen uses alcohol inks then they are going to fade fairly quickly. They were designed for graphic designers who create art work that is meant to be photographed or scanned for use in other media (print, web etc) They don’t care how long the colors last as the artwork is meant for immediate use.

Fact of life, all color fades, some media tend to use colors (pigments) that fade more quickly, watercolor used to be very bad (esp some colors) but with the new pigments colors are more fade proof. But you have to be aware of what you are buying.

If she wants to put her drawings on the wall I suggest she use a different colored medium with her black pens, some watercolors are quite fade proof, inks not so much except for some of the Acrylic inks. There are also colored pencils, but you need to be careful of brand and colors.

Color is fun but I suggest she learn how to use black ink first Course if she just wants to scan everything she creates she can use anything she wants.

If the pen uses alcohol inks then they are going to fade fairly quickly. They were designed for graphic designers who create art work that is meant to be photographed or scanned for use in other media (print, web etc) They don’t care how long the colors last as the artwork is meant for immediate use.

Fact of life, all color fades, some media tend to use colors (pigments) that fade more quickly, watercolor used to be very bad (esp some colors) but with the new pigments colors are more fade proof. But you have to be aware of what you are buying.

Sorry Kathy but I’m afraid you have your wires a little crossed a bit there .
Pigments are very finely ground umm…. well pigment! Like it may be an earth colour like soil in this case or metamorphic rock like Lapis lazuli or cobalt blue again a mineral etc.etc,, which will take a very large exposure to light without fading at all.
We’re talking about many centuries here as is proven by renaissance painting backward !

The other main option in colour (the only option in inks for pens) is dye based ink.
Dye based ink is impermanent ,in the case of the very brush pens I recommended the manufacturer advises you to use then in a sketch book & keep them out of the light :eek:.
So why use dye based ink at all ? well basically –
1.It is a very expensive & highly technical process to grind pigment to a microscopic size that will not clog up a fountain pen or brush pen. Just look at the price difference between pigment ink & normal pen ink.
2. When you are talking real colour outside of black, dye inks still give a much more vibrant colour than pigment inks do , even disregarding the cost of production.

Alcohol based inks such as most fine liners like the Micron, Unipin etc. etc. DO use very finely ground pigment ink suspended in the alcohol so in fact are permanent .Yet have you ever bought one of the colour pens they offer ?
Dull & lack lustre colours I’m afraid, people rarely bother with them.
You are right about using a different medium with the pen outside of black though !
Mike.

In fact there are some PIGMENTS that are not very lightfast… as there are inks that are light fast. UV light breaks links in long carbon chains more easily than in smaller molecules. A simple example are the organic purple pigments used for childreen colored pencils.. they break extremely easy under UV and they are pigments.

On the other hand you can make Dyes that last long, but you woudl need to use materials that are so toxic that it becomes impossible (inks are MUCH MUCH more problematic than pigments toxicity wise because they can get trough our skin)

If you would replace “ink” with “dye” in the above text, then it would be more correct. Ink can contain both dye or pigment colorant. Dye based inks have practically always very poor lightfastness. Some dyes are better, for example, the dyes used in archival quality ballpoint pens, but even the best dye inks are often worse than the worst pigment inks.