Do alcohol markers bleed through colouring book paper?

Yes. Alcohol marker ink is a dye carried in alcohol, and it soaks into paper rather than sitting on top of it. On ordinary paper it goes straight through to the back, and often onto whatever is underneath. That is normal for the medium, not a fault with the marker, and it is the single most common surprise for anyone using alcohol markers in a colouring book for the first time. The good news is that it is completely manageable once you know what decides it.

What decides whether the next page survives?

Three things. First, the paper: heavier stock absorbs more ink before it shows through, and a coated marker paper holds the ink nearer the surface. Second, whether the book prints designs on one side of the sheet or both — with double-sided printing, bleed-through ruins a picture you have not coloured yet. Third, whether there is a spare sheet behind the page. A backing sheet does not stop the ink going through the page you are colouring, but it does stop it reaching the page after that, which is the one you actually care about.

How do you stop alcohol markers bleeding through?

Put a sheet of scrap paper or thin card behind the page before you start, every time. Use light pressure and let the ink flow rather than pressing the nib in — pressing pushes more ink into the fibres and spreads it sideways as well as through. Build colour in layers instead of flooding an area in one pass, and let each layer settle before deciding whether it needs another. Our marker care and tips page has the full list of habits, including storage and nib care.

Which colouring books cope best with markers?

Every colouring book we list has had two things checked against the publisher's own specification before it went up: what the page is printed on, and whether there is a design on the back of it. Most titles in the colouring book range run to 48 pages at 21 × 21 cm, so a scene sits complete on one page. If you want the kindest possible test of a new marker set, start with the bold and easy titles: large open shapes show up streaking and bleed clearly, which is exactly what you want to see early.

What paper should you practise on?

A pad made for markers. Our 120 GSM marker pad comes in A5, A4 and A3 with a choice of 24 or 40 sheets. We are careful about one claim here: the supplier has not confirmed a bleedproof coating, so we do not describe it as bleedproof, and we still recommend a spare sheet underneath when you are building heavier layers of ink. That is the honest position and the safe one.

What does not work with alcohol markers?

Dark paper. Alcohol ink is transparent, so on the black paper pad it simply does not read. Black paper is for opaque media — white and pale pencils, gel pens, and acrylic markers, which sit on top of the surface instead of soaking into it. If you are choosing between the two marker types for a project, alcohol or acrylic markers covers the one difference that decides it.

Short version

• Alcohol ink goes through ordinary paper. Expect it.
• Always put a backing sheet behind the page you are colouring.
• Light pressure, thin layers, let each one settle.
• Prefer single-sided books on decent stock; ours are checked for both.
• Practise on marker paper; use opaque media on black paper.