---
product_id: 88096740
title: "Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow"
brand: "opticz"
price: "€ 0.88"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.gr/products/88096740-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow
store_origin: GR
region: Greece
---

# Twice the ink UV reactive glow Extra large body Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow

**Brand:** opticz
**Price:** € 0.88
**Availability:** ✅ In Stock

## Summary

> ✨ Unleash the Invisible Magic! ✨

## Quick Answers

- **What is this?** Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow by opticz
- **How much does it cost?** € 0.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/88096740-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

- • **Safe for Skin:** Create stunning body art without worry!
- • **Fast-Drying Formula:** No smudges, just vibrant invisible art.
- • **Glow Under Pressure:** Perfect for security marking and event tickets.
- • **Illuminate Your Creativity:** Transform ordinary designs into glowing masterpieces!
- • **Double the Ink, Double the Fun:** Enjoy twice the ink for all your invisible marking needs.

## Overview

The Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker in yellow is designed for creative professionals and event organizers. This marker is invisible in normal light but glows bright yellow under UV blacklight, making it ideal for security marking, body art, and more. With an extra-large body and double the ink of standard markers, it ensures longevity and vibrant results. Safe for skin and fast-drying, this marker is a must-have for anyone looking to add a unique touch to their projects.

## Description

desertcart.com : Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow : Office Products

Review: Great for Geocaches - I bought this to help make UV geocaches. The ink works great, and I believe it works as intended, but it seems UV ink on paper can smear if it gets wet. Easy to use and read with a UV light.
Review: It works - Used this in a student project with our robotics class to create an “escape room”. We used it on a blackboard in a dark area, with some text written in chalk and the other text with this pen. It worked great.

## 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 |
|---------------|-------|
| ASIN | B07H2SHN76 |
| Additional Features | glows bright yellow in blacklight, Non Toxic, Quick-Drying Ink |
| Age Range Description | 13+ |
| Best Sellers Rank | #61,281 in Office Products ( See Top 100 in Office Products ) #579 in Permanent Markers & Marker Pens |
| Body Shape | Cylindrical |
| Brand | Opticz |
| Brand Name | Opticz |
| Closure Type | Pull Cap |
| Color | Yellow |
| Customer Reviews | 4.3 out of 5 stars 627 Reviews |
| Grip Type | Smooth |
| Hand Orientation | Ambidextrous |
| Included Components | 1 x Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker (Yellow) |
| Ink Base | Hybrid |
| Ink Color | yellow |
| Is Waterproof | false |
| Item Dimensions | 5 x 0.6 x 0.6 inches |
| Line Size | 1.0_1.9mm |
| Manufacturer | Opticz |
| Manufacturer Part Number | IIMARKERXLYOP |
| Marker Type | Permanent Marker |
| Material Type | Plastic |
| Model Number | IIMARKERXLYOP |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Pattern | Solid |
| Point Type | Medium |
| Recommended Uses For Product | General writing and marking on various surfaces such as glass, metal, plastics, paper |
| Style | Permanent |
| Surface Recommendation | Glass |
| Target Audience | Adult, Kid |
| Theme | Security and Invisibility |
| UPC | 744271613469 |
| Unit Count | 1 Count |
| Water Resistance Level | Water Resistant |
| Writing Instrument Form | Marker Pen |

## Product Details

- **Brand:** Opticz
- **Ink Color:** yellow
- **Number of Items:** 1
- **Point Type:** Medium
- **Recommended Uses For Product:** General writing and marking on various surfaces such as glass, metal, plastics, paper

## 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.

Sorry

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for Geocaches
*by D***L on June 1, 2025*

I bought this to help make UV geocaches. The ink works great, and I believe it works as intended, but it seems UV ink on paper can smear if it gets wet. Easy to use and read with a UV light.

### ⭐⭐⭐⭐⭐ It works
*by S***T on March 1, 2026*

Used this in a student project with our robotics class to create an “escape room”. We used it on a blackboard in a dark area, with some text written in chalk and the other text with this pen. It worked great.

### ⭐⭐⭐⭐ Not totally invisible.
*by R***R on August 26, 2022*

The marker writes really well and shows up great with a black light, but it’s not totally invisible. If you were playing a game with kids or something, they can see the written material without the light. It looks like a very light highlighter. I still like it though.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.gr/products/88096740-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow](https://www.desertcart.gr/products/88096740-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-04-23*