Bombay India Ink Sepia, 1.0 oz (24BY) – Highly Pigmented, Lightfast and Waterproof
Product description
What it is
Bombay India Ink in Sepia is a dropper-stopper glass bottle containing a highly pigmented ink designed for drawing, brush work and airbrush use. On the page, it reads like a reliable choice for artists who want intense, transparent colour or solid coverage when required.
What it does
On paper or board, this ink dries to a waterproof, permanent film once set. It remains lightfast and resists fading over time, which makes it suitable for pieces intended to endure. When used in pens, it’s noted as non-clogging, which can be important for daily drawing or lettering.
How it can be used
The inks can be diluted with water for traditional watercolor techniques, then applied with brushes. They can also be used in dip pens, technical drawing pens, or airbrush tools, offering versatility across media. Colours are generally brilliant and transparent, except black and white, which are opaque with strong covering power.
Who it’s for

If you favour a strong, flexible ink that can behave like a wash or a precise line, this product may suit you. It’s a pragmatic option for illustrators, calligraphers, or hobbyists who want consistency across different tools without swapping brands.
What to consider before buying
- It’s not perfect for every workflow: in some styles, the sepia tone may read differently on certain papers or at larger scales.
- The opaque black and white provide good coverage, but other sepia tones will depend on dilution and paper interaction.
- The capability to dilute with water means you’ll need to manage drying times and layering, especially if working with multiple passes.
Practical use case


Imagine sketching a portrait study with diluted sepia wash for tonal depth, then returning with a fine nib to add detail. The ink’s waterproof finish helps prevent smudging if you accidentally brush over dried areas afterward. For airbrush work, the ink offers a bridge between traditional drawing and sprayed applications, provided you’re using compatible equipment.
How it compares to other approaches
If you prioritise permanence and waterproofing, this Bombay ink aligns more with artists seeking durable results rather than inexpensive, everyday markers. Compared with non-waterproof alternatives, it carries a predictably robust finish, compared with totally opaque media, it leans toward transparent tonal behaviour, except for the repressed opacity in black and white.

The bottom line — Is it worth it?
Final verdict depends on how you value permanence, versatility and the sepia hue. If you need a flexible ink that can be watered down for washes or used straight for strong lines, this is worth considering. If your work demands a very lightfast, totally non-waterproof pigment or a different colour family, you might explore other options.
What to check before you buy
- Confirm your substrate compatibility (paper surface, drawing boards, or panels) and how it handles water dilution.
- Test a small amount on your typical paper to see how the sepia reads at your preferred dilution and line weight.
- Ensure your tools (brushes, dip pen, airbrush) are compatible with Indian ink formulations to avoid clogging or flow issues.
Quick FAQ
- Will it run when diluted for washes? Yes, it can be diluted with water for watercolor-like washes.
- Is it waterproof when dry? Yes, it becomes waterproof once dry.
- Can it be used in airbrushes? It’s suitable for airbrush use with appropriate thinning and equipment.
Final section: decision guidance
Final verdict
It makes sense if you’re after a durable sepia ink that can be used across brushes, pens and airbrushes, with strong covering power in black and white. If you prioritise a light, true sepia wash with high permanence, this is a reasonable option. If your work relies on a different colour family or a non-waterproof finish, you may want to explore alternatives.
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