--- product_id: 88096740 title: "Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow" brand: "opticz" price: "€ 0.37" currency: EUR in_stock: false reviews_count: 9 url: https://www.desertcart.sk/products/88096740-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow store_origin: SK region: Slovakia --- # Twice the ink UV reactive glow Extra large body Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker, Yellow **Brand:** opticz **Price:** € 0.37 **Availability:** ❌ Out of 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?** € 0.37 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/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 Product description This UV blacklight reactive invisible yellow large tip marker uses our high quality water based invisible ink blend. Perfect for secret messages, marking merchandise, and other stealthy security uses. Glows an incredible bright yellow in blacklight. Ideal for metal, glass, plastics or paper. Can also be used on aluminum, ABS, acrylic, rubber, cellulose, acetate, formica, nylon, polystyrene and polyethylene. Totally invisible and won't wash off easily. Large tip is ideal for covering larger areas with minimum passes. Marker comes ready to use and is formulated to fluoresce brightly under long wave ultraviolet or LED blacklight. Ink is non-toxic, fast-drying and non-transferable. Ideal for applying onto an already printed surface. Marker is non refillable. This classic Opticz Invisible Ink Marker applies totally invisible and will glow bright yellow in UV light Opticz UV Inks have been an industry standard for 10+ years! This marker is suited for re-admittance at events, social gatherings, sporting events, glow parties, marking valuables or your own unique security applications where hidden detection is of benefit. Our inks are non-toxic when used properly, fast-drying and non-transferable. This ink can be used for textile marking, hand-stamping, and fabrics as well. If using on skin, avoid application around sensitive areas like eyes and mouth. Key Features Water based blend is safe for skin when used properly. Ideal for secret messages or security marking. Invisible in normal light. Glows bright yellow in blacklight. Large tip is ideal for covering larger surfaces areas with minimum passes. Marker measures 5.25" long x 1/2" wide ## 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 | #272,883 in Office Products ( See Top 100 in Office Products ) #1,729 in Permanent Markers & Marker Pens | | Body Shape | Cylindrical | | Brand | Opticz | | Brand Name | Opticz | | Closure Type | Pull Cap | | Color | Yellow | | Customer Reviews | 4.4 out of 5 stars 629 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 ### ⭐⭐⭐⭐⭐ Review *by S***T on March 1, 2026* ### ⭐⭐⭐⭐⭐ Review *by R***T on October 6, 2024* ### ⭐⭐⭐⭐ Review *by J***Z on January 3, 2022* ## 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.sk/products/88096740-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow](https://www.desertcart.sk/products/88096740-opticz-uv-blacklight-reactive-large-tip-invisible-ink-marker-yellow) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-07*