---
product_id: 379937308
title: "Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow"
brand: "opticz"
price: "C$3343"
currency: NIO
in_stock: true
url: https://www.desertcart.ni/products/379937308-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow
store_origin: NI
region: Nicaragua
---

# Glows bright yellow under UV blacklight Fast-drying, semi-permanent ink Extra large broad tip for bold marks Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow

**Brand:** opticz
**Price:** C$3343
**Availability:** ✅ In Stock

## Summary

> 🕶️ Mark the unseen, own the spotlight!

## Quick Answers

- **What is this?** Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow by opticz
- **How much does it cost?** C$3343 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/379937308-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow)

## Best For

- opticz enthusiasts

## Why This Product

- Trusted opticz brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Glow with Confidence:** Invisible in daylight, vibrant under UV blacklight for exclusive security and art.
- • **Safe & Skin-Friendly:** Non-toxic formula safe for skin use—perfect for body art and event marking.
- • **Versatile Security Tool:** Ideal for event tickets, inventory control, coupons, and more—stay ahead with invisible marking.
- • **Precision Meets Boldness:** Broad 1.0-1.9mm tip delivers clear, visible lines when illuminated.
- • **Double the Ink, Double the Impact:** Extra-large body holds twice the ink of standard markers—more marking, less refills.

## Overview

The Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker in yellow features a broad tip and fast-drying, semi-permanent ink that remains invisible in normal light but glows bright yellow under UV blacklight. With twice the ink capacity of standard markers and skin-safe formula, it’s perfect for security marking, event tickets, invisible body art, and industrial coding.

## Description

Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow

## Features

- Invisible/colorless in normal light. Glows bright yellow in UV blacklight. Please note, these markers do NOT glow in the dark. You must have a blacklight to get the glow effects.
- Extra large body with braod tip. Contains twice the ink as our standard sized markers!
- Safe for use on skin. Use for security marking (such as admissions) or create amazing invisible body art designs that glow in blacklight!
- These is the markers you want for semi permanent invisible marking. These markers can be used for: Event Tickets, Industrial Coding, Security Printing, Coupons, Raffle Tickets, Inventory Control, Advertising, and more!
- Ink is fast drying and does not remove easily! Avoid sensitive area such as eyes, mouth, and nose.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | opticz |
| Brand | Opticz |
| Model Number | IIMARKERXLYOP |
| Colour | Yellow |
| Material | Plastic |
| Number of Items | 1 |
| Size | 1 count (Pack of 1) |
| Point Type | Fine |
| Line Size | 1.0_1.9mm |
| Ink Colour | Yellow |
| Tip Type | fine point |
| Manufacturer Part Number | IIMARKERXLYOP |
| Manufacturer | opticz |

## Product Details

- **Brand:** Opticz
- **Ink Colour:** Yellow
- **Number of Items:** 1
- **Point Type:** Fine
- **Recommended Uses For Product:** Uv

## Images

![Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow - Image 1](https://m.media-amazon.com/images/I/51afbD3aDQL.jpg)
![Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow - Image 2](https://m.media-amazon.com/images/I/51VF4zKhEOL.jpg)
![Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow - Image 3](https://m.media-amazon.com/images/I/61dL4eH-4JL.jpg)
![Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow - Image 4](https://m.media-amazon.com/images/I/61b80yLvreL.jpg)
![Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow - Image 5](https://m.media-amazon.com/images/I/61IvCaCaDoL.jpg)

## Questions & Answers

**Q: will it work on glass liquor bottle?**
A: Yes, but recommend our blue or red color. They stick to glass better than the yellow. please allow 5-10 mins for the ink to fully dry after application.

**Q: Will it write completely invisible on the face of a playing card?**
A: Works best on porous surfaces. A very faint outline might be visible on a smooth glossy playing card.

**Q: So when you first wrote on paper did you have to wait until it dried to be completely invisible or right out the gate it was invisible?**
A: Yes - It's best if you wait, but it doesn't take long. The ink definitely shows up better once it is dry. Sometimes it's visible after it dries, depending on whether you use cardstock or regular paper. Regardless, it is one of the better pens that I've found to use.

**Q: Will the ink wash out of sheets if laundered in bleach and industrial strength chemicals? Hotel sheets, per se?**
A: It will not. This is security ink and is formulated to stick and be very tough to remove.

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## Frequently Bought Together

- Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow
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**Shop now:** [https://www.desertcart.ni/products/379937308-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow](https://www.desertcart.ni/products/379937308-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-13*