The Question We Get Asked More Than You'd Think
"Can you make Blop in pink?" "I'd love a purple one for my bathroom." "Why isn't there an unscented, colourless version?"
These are questions we genuinely love getting, because they tell us you're paying attention. And they deserve a proper answer.
Here's the honest breakdown of why Blop is blue, why it's only blue (for now), and why that's not just a design choice. It's a functional one.
The Colour Isn't Just Decoration. It's a Signal
Blop's blue colourant serves a real purpose: it tells you when it's time for a replacement.
Here's how it works in practice:
- When Blop is fresh and full, the water in your cistern flushes through with a rich, consistent blue tint
- As the gel gradually depletes over time, the colour in each flush becomes lighter and more diluted
- When the flush water runs nearly clear, that's your cue: time to pop in a new Blop
This is intentional. Without colour, you'd essentially be guessing. You can't easily see how much gel is left inside the container, since it's sitting inside a closed toilet cistern. The colour of the flush water is your window into what's happening in there.
Think of it like a fuel gauge. The colour depth tells you how much gel is left.
One Important Thing We Need to Clarify
This is something we want to make very clear, because we've seen customers misunderstand it:
The shade of blue has nothing to do with how well Blop is cleaning.
Lighter flush water does not mean weaker cleaning. It does not mean Blop is losing effectiveness. It does not mean your toilet is getting less clean.
Here's the truth:
✅ Blop's cleaning gel is formulated to perform consistently throughout its lifespan
✅ The active cleaning agents work at low concentrations, and the colour pigment is completely separate from cleaning performance
✅ Pale blue flush water simply means the gel volume is getting lower, not that the cleaning has weakened
The colourant and the cleaning formula are two different things. One tells you how much is left. The other actually does the cleaning. Don't confuse the two.
So Why Blue Specifically?
Fair question. Why not green? Or pink? Or a nice lavender?
We chose blue for a few reasons:
Blue reads as clean. It's not arbitrary. There's a reason pools, hospitals, cleaning product packaging, and bathroom accessories so often come in blue. The colour psychologically signals cleanliness and freshness. When you see blue water, it feels right in a toilet context.
Blue is neutral and universally inoffensive. Bathrooms come in every colour and style imaginable. A soft blue tint in the flush water tends to complement rather than clash, regardless of your tiles, towels, or décor.
Blue is visually easy to track. The fade from deep blue to light blue to near-clear is easy to read at a glance, making it a practical indicator that works for most people.
What About Colourless? Can't You Just Skip the Dye Altogether?
This one comes up too, and it's completely understandable, especially if you'd prefer the most minimal, unobtrusive product possible.
The challenge with a colourless Blop is that you'd lose the replacement signal entirely. Without colour in the flush water, there's no easy way to know how much gel is remaining or when it's time to replace it. You'd essentially be on a blind timer, checking the container manually, trying to estimate, or just waiting until the toilet isn't being cleaned before realising it's run out.
The colour isn't just a cosmetic touch. It's the feedback mechanism that makes Blop intuitive to use.
We're Listening: Other Colours Might Be Coming
Here's the honest update from our side:
We've heard the requests. Pink. Purple. Green. Colourless. They come up more than you'd think. And internally, we're genuinely having that conversation.
Whether it's additional colour variants or alternative formats down the track, we're not ruling anything out.
If you want to be among the first to know when something new drops, the best way is to follow us on our socials. That's where we share updates as they happen.
In Summary
- Blop is blue because the colour serves a function. It signals how much gel is left via the shade of your flush water
- Lighter flush water = less gel remaining, not weaker cleaning
- Blop's cleaning performance is consistent throughout its lifespan; the pigment and the cleaning agents are separate
- Blue was chosen because it reads as clean, is visually neutral, and is easy to track as an indicator
- We've heard your requests for other colours and colourless options. It's an active conversation internally, so stay tuned
Common Questions About Blop's Colour:
Why is Blop only available in blue?
Blue was chosen because it reads as clean and visually neutral, and because it provides a practical function. The fade from deep to light blue tells you when your Blop is running low and needs replacing.
Does the colour of the flush water tell me how well Blop is cleaning?
No. The colour indicates how much gel is remaining, not how effectively it's cleaning. Blop's cleaning performance is consistent throughout its lifespan. Lighter flush water simply means the gel is nearing the end of its life.
Can I get a colourless version of Blop?
Currently, Blop is only available with its blue colourant. A colourless version would remove the visual replacement signal that helps you know when to replace it. We're open to exploring alternatives in future, so follow our socials for updates.
Will Blop leave blue marks on my toilet?
For most modern toilets, no. Blop's colourant is used at a low concentration and the blue tint you see is in the flush water, not a permanent change to the porcelain surface.
That said, on older toilet seats where the glaze has worn down over time and the surface has become more porous, occasional light blue marks can appear, particularly if flush water splashes upward onto the seat or lid. The good news is these marks are not permanent and can be removed with a mild cream cleanser.
For a full guide on how to remove blue marks and more detail on what causes them, see: Why Is Blop's Flush Water So Blue?
Are other colours like pink or purple being considered?
We've heard the requests! It's something we're actively discussing internally. If you want to be first to know about any new options, follow us on our social media channels.
Is Blop's colour safe?
Yes. The colourant used in Blop (CI 42090) is a standard, commonly used blue dye. It's present at low concentrations and is safe for household use, including in septic systems.