Glow in the dark plastisol ink is a phosphorescent screen printing ink that absorbs ambient light during the day and re-emits it as a green or aqua glow in the dark. It prints, flashes, and cures like standard plastisol — 320°F to a full cure — but it relies on a heavier deposit and a thicker mesh to actually charge and glow. If you’ve printed plastisol before, you already know 80% of what you need. This article covers the other 20%: mesh, deposit, layering, and where glow ink fits next to fluorescent, reflective, glitter, and photochromic options.
We make our own line of plastisol, including specialty effects, so this is the same advice we give shops calling us about their first glow run.
What is glow in the dark plastisol ink?
Glow in the dark plastisol ink is a standard PVC/plasticizer plastisol loaded with phosphorescent pigment — typically strontium aluminate — that stores light energy and releases it as visible light for anywhere from a few minutes to several hours after the light source is removed. The base resin system is identical to any other plastisol: it stays liquid in the bucket and only cures with heat (around 320°F).
The glow effect is a property of the pigment, not the resin. That matters because the brighter and longer-lasting the glow, the larger the pigment particles tend to be — which is why this ink prints heavier, demands a coarser mesh, and pushes through your screen differently than a soft-hand color.
Two things to know up front:
- Glow inks are not fluorescent inks. Fluorescent (day glow) inks pop under UV/black light and look brighter in daylight, but they don’t glow in the dark on their own. Glow inks look pale/off-white in daylight and emit light without any light source after charging.
- Glow inks are not photochromic inks. Photochromic changes color when UV hits it (sunlight outside, white inside). Glow charges in light and emits in dark. Different chemistry, different effect.
How glow in the dark plastisol ink works
Phosphorescent pigment particles absorb photons from any visible or UV light source. The electrons in the pigment get bumped to a higher energy state, then slowly drop back down — releasing photons as they fall. That slow release is the “afterglow.”
Bright light in = bright, longer glow out. Dim light in = weak, short glow. A shirt printed with glow ink that sat in a drawer all day won’t glow much when the lights go off. Hold it under a lamp or in sunlight for 5–10 minutes and you’ll get a strong green/aqua glow that fades over 30 minutes to a few hours depending on the pigment load.
Two practical implications:
- Deposit matters. More pigment on the shirt means more glow. A thin print of glow ink looks dim. A heavy print pops.
- Underlay matters. On dark shirts, you need a white underbase or the pigment has nothing bright to sit on top of. The white reflects more incoming light into the pigment and reflects the emitted glow back out of the print.
How to print glow in the dark plastisol ink
Glow plastisol prints close to a standard opaque white workflow, with three adjustments: coarser mesh, heavier deposit, and a white underbase on dark fabric.
Recommended setup:
- Mesh count: 86–110 for the glow layer. Anything finer chokes the pigment particles. We’ve had shops try 156 mesh and end up with a print that barely glows.
- Squeegee durometer: 65/90/65 triple-ply or a 70 single. Stiff enough to push the heavy ink, soft enough to clear cleanly.
- Squeegee angle: 15–20° off vertical. Lower angle, heavier deposit.
- Off-contact: 1/16” to 1/8” depending on press tension.
- Flood stroke: medium pressure, full coverage. Glow ink dries slower in screen than standard plastisol, but don’t let it sit overnight.
- Cure temp: 320°F (160°C) for a full cure. Same as any plastisol.
- Underbase on darks: Standard white plastisol underbase, flash, then 1–2 hits of glow on top.
Stroke count: On a light shirt, one heavy print stroke is usually enough. On a dark shirt with a white underbase, plan for two hits of glow — print, flash, print — to build the pigment deposit. Single-hit glow on dark shirts almost always disappoints.
Flash temp between hits: 240–260°F surface temp, just enough to gel the print so the next stroke doesn’t lift.
Charging the print for product photos
If you’re shooting a sample for your shop’s website, hold the shirt under a 400W shop light or in direct sunlight for 5 minutes, then bring it into a fully dark room. Phone cameras need a 2–4 second exposure to capture the glow. A quick flashlight pass right before the shot works for video.
Glow in the dark vs other specialty plastisols
Shops often confuse glow with fluorescent, reflective, and photochromic because they all live in the “high-visibility / effect” category. They behave differently and you’d spec them for different jobs.
| Ink type | Effect | Light source needed | Daytime appearance | Best for |
|---|---|---|---|---|
| Glow in the dark plastisol | Emits green/aqua light in darkness | Charges from any light, emits in dark | Pale off-white | Concert tees, Halloween, safety novelty, kids’ apparel |
| Fluorescent (day glow) plastisol | Vivid pop under daylight and UV | Needs ambient or UV light to be visible | Saturated neon | High-vis workwear, athletic, retail apparel |
| Reflective plastisol | Bounces direct light back at source | Needs a direct light source (headlights, flash) | Silver/grey | Running gear, cycling, road safety |
| Photochromic plastisol | Changes color under UV | UV/sunlight triggers color change | Light tint, color appears outdoors | Promotional, novelty, kids |
| Glitter plastisol | Sparkles with reflective flake | Ambient light, glitters under any | Solid color with flake | Fashion, dance, cheer |
If a customer asks for “glow,” confirm what they actually mean. We get plenty of calls for “glow ink” where the customer really wants fluorescent pink — it shows up bright at a rave but isn’t phosphorescent. Wrong ink for the job.
Best glow and high-visibility plastisol inks (our recommendations)
We make our own line of glow, fluorescent, and photochromic plastisol. House brand first, then we’ll point you to compatible adjacent products.
For actual glow-in-the-dark prints
Glow In the Dark Aqua Blue Plastisol Ink — our core glow product. Aqua-blue afterglow, prints through 86–110 mesh, cures at 320°F. Available from 8 oz pints up through 5-gallon pails ($49.99–$879.99). Best on a white underbase for dark garments, prints direct on whites and light pastels.
This is the one to spec if your customer wants the classic green/aqua nighttime glow effect. Charge time: 2–5 minutes under a standard room light. Afterglow: visible for 30+ minutes, dimming over time.
For UV/sunlight color-change effects (not glow, but adjacent)
Total Ink Solutions® Photochromic Orange Plastisol Ink — prints near-clear/white indoors, turns vivid orange in sunlight. $124.99 per quart. Different chemistry than glow, but customers asking for “the magic ink” often want this. Prints through 156–200 mesh, cures at 320°F.
For fluorescent high-visibility (the most common “glow” mix-up)
If your customer wants a bright neon that pops under daylight and UV — not a nighttime afterglow — fluorescent day glow is what they’re after.
Our fluorescent puff line gives you raised 3D fluorescent prints:
- Fluorescent Puff Day Glow Plastisol Ink – Safety Orange — high-visibility orange with puff effect. $49.99–$799.99.
- Fluorescent Puff Day Glow Plastisol Ink – Shocking Pink — same puff system in pink. $49.99–$799.99.
For flat (non-puff) fluorescent, our standard day glow line covers the spectrum:
- Fluorescent Day Glow – Chartreuse
- Fluorescent Day Glow – Shocking Pink
- Fluorescent Day Glow – Magenta
- Fluorescent Day Glow – Brilliant Blue
- Fluorescent Day Glow – Safety Orange
- Fluorescent Day Glow – Tennis Ball Yellow
- Fluorescent Day Glow – Purple
- Fluorescent Day Glow – Flame Red
All priced $39.99–$559.99 from pints to gallons. Same 320°F cure, prints through 110–156 mesh.
Troubleshooting glow in the dark plastisol
Most glow ink problems trace back to one of three issues: mesh too fine, deposit too thin, or no underbase on dark fabric. Run through this list before you blame the ink.
Problem: Print barely glows.
Cause: Not enough pigment on the shirt. Fix: Drop your mesh from 156 to 86 or 110. Add a second hit of glow with a flash between. On dark shirts, confirm you have a full-opacity white underbase.
Problem: Glow looks fine in daylight but dim at night.
Cause: Pigment is starved for light. Fix: Charge the garment under a bright light for 3–5 minutes before testing. If it still glows weakly, your deposit is too thin or you used a non-phosphorescent ink (check the label — fluorescent ≠ glow).
Problem: Ink clogs the screen.
Cause: Mesh too fine for the pigment particles. Fix: Move to 86–110 mesh. Also confirm you’re not letting the screen sit unprinted for long stretches — glow ink can dry in screen faster than standard plastisol on hot press days.
Problem: Glow ink looks chalky or rough on the shirt.
Cause: Insufficient cure or too much pigment on the surface. Fix: Verify cure temp at 320°F with a temp gun or donut probe — not just the dryer’s set point. If cure is fine, slow your squeegee stroke to lay the ink down smoother, or print/flash/print to build deposit in layers.
Problem: Glow fades after a few washes.
Cause: Undercure. Plastisol that hasn’t reached 320°F throughout the ink film washes out. Fix: Verify cure with a stretch test (cured plastisol stretches without cracking) or send a sample for a wash test before running production.
Problem: Customer says the shirt doesn’t glow at all out of the box.
Cause: It hasn’t been charged yet. Glow ink straight out of a poly bag has been in the dark for days. Fix: Tell the customer to hold the shirt under a light for 2–5 minutes before going dark. Include a card with the order if it’s a high-touch customer base.
Curing glow in the dark plastisol
Glow plastisol cures at the same temperature as standard plastisol — 320°F (160°C) throughout the full ink film, not just the surface. The phosphorescent pigment doesn’t change the cure temp; it just sits in the resin.
Conveyor dryer: 320°F surface temp, 30–60 second dwell time depending on dryer length and deposit thickness. Heavier deposits need more dwell to bring the bottom of the ink film up to temp.
Heat press cure: Yes, you can cure plastisol with a heat press. Set 320°F, 35–45 seconds, medium pressure, with a sheet of parchment or Teflon between the platen and the ink. We’ve covered this in detail in our heat press cure guide — short version, it works, but it’s slower than a dryer and you have to verify temp at the ink surface.
Test the cure:
- Stretch test: stretch the print 25%. Cured plastisol flexes; undercured cracks.
- Wash test: 3–5 cycles in warm water with regular detergent. If the print fades, cracks, or peels, your cure didn’t get there.
- Temp probe: drop a donut probe through the dryer with a test print. Confirms surface temp at the actual ink position.
Glow ink on different garments
Glow plastisol works on cotton, 50/50 blends, and polyester with the right setup. A few notes:
- 100% cotton: No bleed risk. Print direct on whites, white underbase on darks.
- 50/50 blends: Use a low-bleed white underbase to prevent dye migration into the glow layer.
- 100% polyester: Use a poly-grade low-bleed white underbase and consider a low-cure plastisol if the fabric is heat-sensitive (some athletic poly scorches at 320°F). Glow pigment behaves the same; the underbase is the variable.
For poly jerseys and performance shirts, expect to flash longer and run dryer temp slightly lower with longer dwell. Test, don’t guess.
Glow plastisol and plastisol transfers
Yes, you can make glow-in-the-dark plastisol transfers. The pigment survives the gel-and-press workflow. Print the glow ink on transfer paper, gel at 220–240°F (don’t fully cure — you want the ink to bond to the shirt when pressed), powder with a hot-melt adhesive, and store flat.
When pressed onto a garment, you get a glow print without having to run the shirt through your dryer. We’ve had screen print transfer customers run glow designs in low-quantity custom orders this way — useful for one-offs.
Frequently asked questions
What is plastisol ink made of?
Plastisol ink is a suspension of PVC (polyvinyl chloride) resin particles in a plasticizer, with added pigment and rheology modifiers. It stays liquid at room temperature and cures into a solid film when heated to about 320°F. Unlike water-based ink, plastisol doesn’t dry by evaporation — it only cures with heat. That’s why a press can sit half-printed overnight without the ink drying in the screen.
Does glow in the dark plastisol ink really glow?
Yes — when properly charged with light. Phosphorescent strontium aluminate pigment absorbs photons and re-emits them over 30 minutes to several hours after the light source is removed. The brighter the charging light and the heavier the ink deposit, the stronger and longer the afterglow. Thin prints with no underbase on dark fabric will disappoint; heavy prints on a white underbase glow strongly.
What mesh count do you use for glow in the dark plastisol?
86 to 110 mesh. The phosphorescent pigment particles are larger than standard plastisol pigments and need a coarser mesh to lay down enough deposit to glow. Anything finer than 110 typically gives a weak glow effect.
What’s the difference between glow in the dark ink and fluorescent ink?
Glow in the dark ink stores light and emits it in darkness (phosphorescence). Fluorescent ink is bright under daylight and pops under UV/black light, but it doesn’t glow on its own when the lights go out. Customers asking for “glow” often mean fluorescent — confirm before you order.
How long does glow in the dark plastisol glow?
A well-charged, heavy-deposit glow print emits visibly for 30 minutes to several hours, dimming gradually over time. Initial glow is brightest in the first 5–10 minutes after charging. The total glow duration depends on how long and how brightly the print was charged before going dark.
Can you cure plastisol ink with a heat press?
Yes. Set the heat press to 320°F, press for 35–45 seconds at medium pressure, and use a parchment or Teflon sheet between the platen and the ink. A conveyor dryer is faster and more consistent for production runs, but a heat press handles small-batch jobs and is what most one-person shops start with. Always verify cure with a stretch test or wash test.
Is plastisol ink better than water-based ink?
Different tools for different jobs. Plastisol sits on top of the fabric with a bright opaque finish, prints easily on darks without bleed issues, and forgives operator error. Water-based ink soaks into the fibers for a soft hand and breathable feel, but it’s harder to print opaque colors on dark shirts and dries in screen if you stop printing. For specialty effects like glow, glitter, reflective, and puff, plastisol is the standard because the pigment loads are too high for water-based systems.
What’s the difference between discharge ink and plastisol?
Discharge ink chemically removes the dye from cotton fabric, replacing it with a pigment — so the print becomes part of the shirt with almost no hand feel. It only works on dischargeable dyed cotton and won’t work on polyester or many garment-dyed blends. Plastisol sits on top of the fabric as a printed film and works on virtually any substrate. For glow effects, you want plastisol; discharge can’t carry the phosphorescent pigment load.
Can you mix glow in the dark ink with other plastisol colors?
You can, but you’ll dilute the glow effect. Phosphorescent pigment needs a high concentration to glow visibly, so cutting glow ink 50/50 with a colored plastisol usually leaves you with a tinted ink that barely glows. If you want a colored daytime appearance with a glow effect, print the color first, flash, then print pure glow on top.
What’s the best white plastisol ink for a glow underbase?
A high-opacity, low-bleed white plastisol that flashes fast and prints clean through 156 mesh. Our Total Ink Solutions house white inks are formulated for this — strong opacity, fast flash, compatible with our glow and fluorescent lines. The underbase is doing two jobs under glow: blocking the dark shirt color and giving the glow pigment a bright surface to sit on. Don’t skimp.
Does glow in the dark plastisol ink wash out?
Properly cured glow plastisol survives 40+ wash cycles with the glow effect intact. The pigment is locked into the cured PVC film, not sitting on the surface. If your glow print fades fast, the cause is almost always undercure (didn’t hit 320°F throughout the film) — not the pigment itself. Verify your dryer temp at the ink surface, not just the dryer’s set point.
How much does glow in the dark plastisol ink cost?
Our Glow In the Dark Aqua Blue Plastisol Ink runs $49.99 for a pint up to $879.99 for a 5-gallon pail. Glow inks cost more than standard plastisols because the phosphorescent pigment itself is expensive — strontium aluminate is not cheap raw material. Budget accordingly; a glow design is not a place to cut corners on ink quality.
Can you screen print glow ink on polyester?
Yes, with a low-bleed white underbase and careful cure management. Polyester athletic fabrics can scorch above 320°F, so use a low-cure plastisol underbase if you’re working on heat-sensitive performance gear. The glow layer prints normally on top once the underbase is flashed.
If you’re spec’ing glow ink for the first time, call us before you order. We answer the phone, we’ve run the ink, and we’d rather spend 10 minutes on the right product than ship you the wrong one. That’s the difference between a family-owned ink house and a catalog — our name’s on every bucket, so we have a real stake in your print coming out right.