--- product_id: 379937308 title: "Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow" brand: "opticz" price: "142.77 DT" currency: TND in_stock: false reviews_count: 5 category: "Opticz" url: https://www.desertcart.tn/products/379937308-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow store_origin: TN region: Tunisia --- # Bright yellow glow under UV blacklight 2x ink volume for extended use Safe, non-toxic & skin-friendly formula Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow **Brand:** opticz **Price:** 142.77 DT **Availability:** ❌ Out of Stock ## Summary > 🕶️ Glow Undercover: Mark Your World in Invisible Brilliance! ## Quick Answers - **What is this?** Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow by opticz - **How much does it cost?** 142.77 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Safe for All Ages & Uses:** Non-toxic, skin-safe ink designed for professional and creative applications without compromise. - • **Fast-Drying & Semi-Permanent:** Quick-dry formula ensures your markings stay put without smudging or easy removal. - • **Versatile Surface Compatibility:** Works flawlessly on metal, glass, plastic, paper, and even skin—ideal for security, art, and inventory control. - • **Double the Ink, Double the Impact:** Extra-large body with broad tip holds twice the ink of standard markers for longer, bolder markings. - • **Invisible by Day, Glowing by Night:** Stealthy yellow ink only visible under UV blacklight—perfect for secret codes and exclusive events. ## Overview The Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker in yellow features a semi-permanent, fast-drying ink that remains invisible in normal light but glows bright yellow under UV blacklight. With twice the ink volume and a broad tip, it’s designed for large, bold markings on diverse surfaces including skin, metal, glass, and plastic. Non-toxic and safe for all ages, this marker is perfect for security marking, event tickets, inventory control, and creative body art, making it a must-have tool for professionals and trendsetters who want to stay ahead in stealth and style. ## Description Our Opticz brand UV blacklight reactive invisible ink markers use high quality semi permanent invisible ink. Perfect for identification marking, wall decoration, and other stealthy security uses. Glows an incredibly bright in blacklight! Perfect for metal, glass, plastics, paper. Safe for skin and body as well. Totally invisible, won't wash off, and is only visible under blacklight. These markers have a large body and wide tip. Great for shading in large areas and making larger marks than our standard fine tip markers. They also have 2x the amount of ink inside! 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! Can also be used on: Aluminum, ABS, Acrylic, Rubber, Cellulose, Acetate, Formica, Nylon, Polystyrene, and Polyethylene. Fine tip for precision application. Ink is non-toxic, fast-drying and non-transferable.Prolonged exposure to sun light or continuous high powered UV exposure may cause fading over time. Review: Nice and bright Review: Great for Geocaches ## 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 | | Age Range Description | All ages | | Best Sellers Rank | #33,720 in Office Products ( See Top 100 in Office Products ) #334 in Permanent Markers & Marker Pens | | Body Shape | Round | | Brand | Opticz | | Brand Name | Opticz | | Colour | Yellow | | Country of Origin | USA | | Customer Reviews | 4.3 out of 5 stars 590 Reviews | | Hand Orientation | Ambidextrous | | Included Components | 1 x Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker (Yellow) | | Ink Base | Hybrid | | Ink Colour | Yellow | | Is Waterproof | false | | Item Dimensions | 12.7 x 1.5 x 1.5 Centimeters | | 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 Items | 1 | | Number of Pieces | 1 | | Pattern | Letter Print | | Point Type | Fine | | Recommended Uses For Product | Uv | | Special Features | glows bright yellow in blacklight, Non Toxic, Quick-Drying Ink | | Style Name | Chisel | | Surface Recommendation | Cardboard, Glass, Plastic, Wood | | Target Audience | Adult, Kid | | Theme | Security and Invisibility | | UPC | 744271613469 | | Unit Count | 1.0 Count | | Water Resistance Level | Water Resistant | | Writing Instrument Form | Marker Pen | ## 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. Sorry ## Customer Reviews ### ⭐⭐⭐⭐⭐ Nice and bright *by A***R on 28 April 2025* ### ⭐⭐⭐⭐⭐ Great for Geocaches *by D***L on 1 June 2025* ### ⭐⭐⭐⭐⭐ It works *by S***T on 1 March 2026* ## Frequently Bought Together - Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow - COSOOS 2 Pack UV Flashlight, 12 LED Handheld Blacklight Flashlight 395nm Mini Light Torch Detector for Dog Pet Urine Stains, Bed Bugs and Scorpions. (Batteries not Included) - Vansky UV Flashlight Black Light, 51 LED Blacklight Pet Urine Detector for Dog/Cat Urine, Dry Stains, Bed Bug, Resin Curing, Scorpions Finder --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/379937308-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow](https://www.desertcart.tn/products/379937308-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-30*