---
product_id: 3620920
title: "All Purpose Invisible Blue UV Blacklight Reactive Security Ink (2 Ounce Bottle)"
brand: "opticz"
price: "€ 23.80"
currency: EUR
in_stock: true
reviews_count: 12
category: "Opticz"
url: https://www.desertcart.pt/products/3620920-all-purpose-invisible-blue-uv-blacklight-reactive-security-ink-2
store_origin: PT
region: Portugal
---

# Fast drying, alcohol-based formula Bright blue glow under UV blacklight Invisible in normal light All Purpose Invisible Blue UV Blacklight Reactive Security Ink (2 Ounce Bottle)

**Brand:** opticz
**Price:** € 23.80
**Availability:** ✅ In Stock

## Summary

> 🔵 Illuminate the unseen, own the night!

## Quick Answers

- **What is this?** All Purpose Invisible Blue UV Blacklight Reactive Security Ink (2 Ounce Bottle) by opticz
- **How much does it cost?** € 23.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/3620920-all-purpose-invisible-blue-uv-blacklight-reactive-security-ink-2)

## 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

- • **UV Glow Power:** Reveals a vibrant blue glow only under blacklight, perfect for exclusive events and security checks.
- • **Safe & Trusted:** Non-toxic and skin-safe when used as directed, backed by the reputable Opticz brand.
- • **Fast-Dry Formula:** Alcohol-based ink dries quickly, ensuring efficient stamping and minimal wait time.
- • **Multi-Surface Master:** Works seamlessly on fabric, plastic, metal, paper, and resin for versatile applications.
- • **Stealth Mode Activated:** Completely invisible under regular lighting for covert marking and security.

## Overview

Opticz All Purpose Invisible Blue UV Blacklight Reactive Security Ink is a 2oz alcohol-based ink that remains invisible in normal light but glows bright blue under UV blacklight. Fast drying and non-toxic, it’s ideal for security marking, glow parties, and creative projects across multiple surfaces. Trusted by professionals and creatives alike, this ink offers covert visibility with vibrant UV impact.

## Description

desertcart.com : Opticz All Purpose Invisible Blue UV Blacklight Reactive Security Ink (2 Ounce Bottle) : Party Favors : Office Products

Review: This stuff is excellent- but truly an ink, not a paint. - This product is easy to use and looks great under a black light. I've painted plastic, metal, fabric, paper and resin with minimal issues. I found that painting over fabric is particularly successful, and white is best. I was glad that I read the reviews that indicated that while this works well- it is very thin. On occasion, you do need a few coats to really pop- particularly if the object isn't stark white. This didn't show up on anything I painted in normal light- and is very much invisible until revealed by blacklight. This is exactly the answer to what I was looking for, for personal projects. I would buy again.
Review: Awesome - It works very well. Completely clear without a blacklight. No issues with skin. Used it on face, neck and arms. Lasted all night of dancing amd probably more.

## Features

- Invisible in regular light, glows bright blue in blacklight. The colors really pop in ultraviolet light but are undetectable in normal light.
- Choose between 5 sizes discounted by quantity. 2oz, 4oz, 8oz, 16oz and 32oz.
- Ideal for glow parties, hand stamping, marking valuables, admissions, and much more
- Safe and non toxic when used as directed. Alcohol based and fast drying. Ideal for stamp pads and rubber stamps. NOT FOR PRINTERS OR TATTOOS.
- Trusted Opticz Brand. We also carry a full line of invisible UV ink marker, uv blacklights and daytime visible inks. Click on our brand name OPTICZ to see our entire selection in our storefront!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005X8PKBI |
| Best Sellers Rank | #39,986 in Office Products ( See Top 100 in Office Products ) #38 in Bottled Pen Ink |
| Brand | Opticz |
| Brand Name | Opticz |
| Container Type | Bottle |
| Customer Reviews | 4.2 out of 5 stars 1,076 Reviews |
| Global Trade Identification Number | 00595013905461 |
| Ink Color | Blue |
| Item Volume | 2 fluid ounces |
| Manufacturer | Opticz |
| Manufacturer Part Number | DGINK2OZB |
| Model Number | DGINK2OZB |
| Number of Items | 1 |
| Package Information | Bottle |
| Paint Type | Alcohol |
| UPC | 595013905461 890747002302 |
| Volume | 2 fluid ounces |

## Product Details

- **Brand:** Opticz
- **Global Trade Identification Number:** 00595013905461
- **Item Volume:** 2 fluid ounces
- **Package Information:** Bottle
- **Paint Type:** Alcohol

## Images

![All Purpose Invisible Blue UV Blacklight Reactive Security Ink (2 Ounce Bottle) - Image 1](https://m.media-amazon.com/images/I/61p1NYcbmuL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What would this look like on black fabric?**
A: The ink will still glow in UV light on any surface. The exact appearance would depend on how absorbent the fabric is.

**Q: I live in a high crime town,i have lost 5 tables from the front porch,looking for a invisable long lasting ink/marking method so if cops can identify**
A: If you mark the underside of the table so that it is not exposed to sunlight or rain, it should work fine.

**Q: Can you use if in a fountain pen?**
A: Would not be ideal for this purpose. Fountain pen ink is typically water based. Our inks are alcohol based and much thinner than a water based ink. They can work well with calligraphy pens in some cases, but an alcohol based ink would not mesh well with the internal parts of a fountain pen.

**Q: What wavelength (nm?) of black light is the ink most sensitive to?  i want to purchase some uv leds and want the brightest florescence i can get.  thx**
A: 385-390NM. Fluorescent black light works the best.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This stuff is excellent- but truly an ink, not a paint.
*by A***R on October 21, 2022*

This product is easy to use and looks great under a black light. I've painted plastic, metal, fabric, paper and resin with minimal issues. I found that painting over fabric is particularly successful, and white is best. I was glad that I read the reviews that indicated that while this works well- it is very thin. On occasion, you do need a few coats to really pop- particularly if the object isn't stark white. This didn't show up on anything I painted in normal light- and is very much invisible until revealed by blacklight. This is exactly the answer to what I was looking for, for personal projects. I would buy again.

### ⭐⭐⭐⭐⭐ Awesome
*by R***Z on June 17, 2025*

It works very well. Completely clear without a blacklight. No issues with skin. Used it on face, neck and arms. Lasted all night of dancing amd probably more.

### ⭐⭐⭐⭐⭐ Worth the Price
*by B***S on June 21, 2021*

I thought it wasn't going to be good quality and last long on the skin. However, it actually lasted 2-3 days on my skin. I was really testing it out with intense scrubbing and soap, and it still showed under UV light. I think it's perfect for events because it doesn't wear out easily. I also think that it's bright enough for darker skin tones because it glows really well like in the picture that it shows. Just don't forget a UV light, and a blank ink pad. :) hope this helps lol (will be updating after an event for a better review) Update: It did well especially on different skin tones, and also on sweaty kids :)

## Frequently Bought Together

- Opticz All Purpose Invisible Blue UV Blacklight Reactive Security Ink (2 Ounce Bottle)
- Carter's Felt Uninked Stamp Pad, 2.75 x 4.27 Inches (21021)
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**Shop now:** [https://www.desertcart.pt/products/3620920-all-purpose-invisible-blue-uv-blacklight-reactive-security-ink-2](https://www.desertcart.pt/products/3620920-all-purpose-invisible-blue-uv-blacklight-reactive-security-ink-2)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-15*