Making your own glow in the dark paint is simpler than most people expect. You need two things: a clear or transparent medium, and strontium aluminate phosphorescent pigment powder. Mix them together, apply to your surface, charge under light - and you have professional-grade glow paint that you made yourself, in any colour you want, at a fraction of the cost of pre-mixed alternatives.
This guide covers everything - the right medium, the correct ratio, application technique, and how to get the strongest possible glow from every coat.
Watch the Full Video Tutorial First
Before diving into the written guide, watch our full video walkthrough. It covers how the pigment works, how to mix it step by step, and a live painting demonstration showing the glow reveal in complete darkness.
The written guide below goes deeper on the details - ratios, surface tips, sealing, and troubleshooting - so keep reading even after watching.
What You Need
The pigment: Strontium aluminate phosphorescent pigment powder - this is what actually glows. It is not a dye, it does not dissolve, and it is not the same as the cheap zinc sulfide powder found in most craft store glow products. Strontium aluminate glows significantly longer and brighter than zinc sulfide - where zinc sulfide fades within 30 to 60 minutes, strontium aluminate can glow for up to 18 hours. You can use any colour from our glow in the dark pigment powder range - with green and cyan producing the brightest and longest-lasting glow, and warm tones like pink, orange and purple producing softer effects.
The medium: Any liquid or paste that will bind the pigment to your surface. The more transparent the medium, the stronger the glow - because opaque or coloured mediums reduce how much light reaches the pigment crystals during charging and how much glow is visible once the lights go off. That said, coloured mediums can still work, especially when the pigment's own glow colour complements the medium. Good options include:
- Clear acrylic medium or acrylic gloss gel
- Clear acrylic paint (used as a base)
- Coloured acrylic paint (reduces but does not eliminate glow)
- Mod Podge (gloss finish)
- Clear nail polish (for small nail art applications)
- Clear resin or epoxy (for casting and jewellery)
- Clear fabric medium (for clothing and fabric)
- Clear varnish or sealant (for outdoor or wood applications)
Glow in the Dark Paint Ratio - What Actually Works
Use 1 part pigment powder to 4 parts medium by volume. This is the ratio that delivers a strong, consistent glow without wasting pigment or causing the mixture to clump.
A few things to understand about this ratio:
Going above 1:3 is not recommended. Beyond roughly one part pigment to three parts medium, the mixture becomes oversaturated. The pigment crystals start clustering together rather than distributing evenly, which actually reduces glow performance rather than improving it. More pigment does not always mean more glow.
Going below 1:4 reduces brightness noticeably. You can use less pigment for more subtle effects, but the glow will appear weaker. Duration is determined by the quality of the charge and the pigment itself, not the concentration in the mix.
If you want a stronger glow, apply more layers - not more pigment. This is the most important practical insight for achieving maximum brightness. Two coats at 1:4 will outperform one coat at 1:2 in both visual consistency and glow duration. Build up thin, even layers rather than trying to load a single coat with excess pigment.
Mixing Technique
Pour your medium into a mixing container first, then add the pigment powder gradually while stirring.
The pigment will not dissolve - it is a fine crystal powder that forms a suspension in the medium, not a solution. This means it will settle if the mixture sits still for too long. Stir well before each coat of application.
Avoid vigorous shaking if you are using a jar or bottle - this introduces air bubbles which can create an uneven finish. Gentle but thorough stirring is enough.
There are no special tools required. A wooden craft stick, a palette knife, or even a toothpick for small quantities all work fine. Avoid metal tools if you are mixing into resin, as some resins can react with metal.
Does Glow in the Dark Paint Work on All Surfaces?
Glow paint made with strontium aluminate pigment works on almost any surface that accepts the medium you are using. In practice this includes:
- Canvas and paper (for art and illustration)
- Wood (furniture, decorative items, outdoor features)
- Walls and ceilings (bedroom murals, star ceilings, accent features)
- Fabric and clothing (when mixed with a fabric medium and heat set)
- Resin and epoxy (jewellery, coasters, table tops, casting)
- Clay and polymer clay (for 3D models and crafts)
- Ceramic and glass (with appropriate sealant)
- Plastic and 3D prints (with a compatible clear base coat)
The surface preparation rules are the same as for any paint - clean, dry, and free from grease or dust. On very porous surfaces like raw wood or unprimed walls, a white primer or base coat first will dramatically improve glow brightness by providing a reflective surface for the light to bounce off.
The White Base Coat - The Most Important Tip
This is the single most impactful thing you can do to improve the brightness of your finished glow paint, and the tip most people overlook.
Apply a coat of white paint to your surface before adding any glow paint. Let it dry completely. Then apply your glow paint mixture on top.
Here is why this matters: strontium aluminate pigment emits light in all directions - including downward into the surface. On a dark or natural-coloured surface, that downward light is absorbed and lost. On a white surface, it is reflected back outward toward the viewer. A white base coat can increase perceived glow brightness significantly - sometimes dramatically.
For maximum effect on walls, ceilings, or large painted surfaces, use a white emulsion or primer underneath every glow layer.
Application Tips
Apply in thin, even coats. Each coat should be thin enough to dry within a reasonable time. Thick coats trap moisture underneath and can crack or peel.
Allow each coat to dry fully before adding the next. This is especially important for fabric applications where heat setting is required between coats.
Build up layers for stronger glow. Two or three thin coats will always outperform one thick coat - both in visual consistency and brightness.
Is the Result Waterproof?
Yes - once the medium is fully dry, the glow paint is water resistant. Most acrylic-based mediums cure to a water-resistant finish that handles normal cleaning and light moisture exposure without issue.
For outdoor applications exposed to rain or standing water, seal the finished piece with a clear weatherproof varnish. One thing worth knowing: sealants labelled "UV blocking" will reduce how much sunlight reaches the pigment, which means slower charging from natural light. For outdoor pieces that rely on sunlight to charge through the day, choose a clear weatherproof sealant without UV-blocking properties.
Fabric applications should be heat set with an iron (using a protective cloth between the iron and the paint) before washing, and washed inside out on a gentle cycle.
How to Get the Best Glow from Your Finished Paint
Once your paint is dry, the glow performance comes down to charging. Read our full guide on how to charge glow in the dark pigment & paint for maximum brightness for complete detail, but the key points are:
- Charge under a UV flashlight for 1-2 minutes for a strong glow lasting 8 hours or more
- Place finished artwork on the sunny side of a room to charge passively throughout the day and glow all night without manual charging
- The longer the charge, the longer the glow duration
- A white base coat underneath dramatically increases perceived brightness
For charging, a UV flashlight gives the fastest and strongest results.
The glow is brightest in the first few minutes after charging and softens gradually - this is the natural discharge curve of the phosphorescent crystals, not a sign of fading or damage. The pigment recharges indefinitely and never wears out.
Pre-Mixed vs DIY - Which Is Better?
Making your own glow paint from pigment powder gives you complete control over consistency, concentration, and the medium you use. It is the better choice when you need a specific medium - fabric, resin, outdoor varnish - or when you want to mix custom quantities for a large project.
Our ready-mixed glow in the dark acrylic paints are the better choice when you want convenience - no measuring, no mixing, consistent results straight from the jar, ready to apply directly to canvas, wood, walls and most surfaces.
For resin, clay, fabric, and specialist applications, making your own from pigment powder is always the recommended approach.
Quick Reference
| Detail | |
|---|---|
| Pigment to medium ratio | 1 part pigment : 4 parts medium |
| Maximum ratio | 1:3 (beyond this, clustering reduces performance) |
| For stronger glow | Apply more layers, not more pigment |
| Medium type | Clear works best - coloured mediums reduce but don't eliminate glow |
| Base coat | White paint underneath increases brightness significantly |
| Waterproof when dry | Yes - seal for outdoor use |
| Works on | Most surfaces - canvas, wood, walls, fabric, resin, clay |
| Charging time | 1–2 minutes UV or sunlight for 8+ hours glow |
Best Medium for Glow in the Dark Pigment
The medium you choose affects both how the paint handles and how brightly it glows. Here is how the main options compare:
Clear acrylic medium is the most versatile choice for most people. It applies smoothly, dries quickly, works on almost every surface, and its full transparency means maximum glow brightness. It is the medium used in our ready-mixed acrylic paint range and the one we recommend for beginners.
Resin and epoxy produce the most dramatic glow results of any medium - because the thickness of a resin cast allows a large volume of pigment to charge and emit light simultaneously. Resin is ideal for jewellery, coasters, furniture tops and decorative objects. The pigment does not affect the cure of most resins when kept at the recommended 1:4 ratio.
Fabric medium is specifically formulated to flex with fabric fibres after drying, which means the paint will not crack or peel when the fabric moves or is washed. Use this for clothing, bags, shoes and any textile application. Heat set after application for best durability.
Clear varnish or outdoor sealant works well for wood, concrete and stone. Good for garden features, outdoor murals and decorative paving.
Coloured acrylic paint can also be used - it will reduce glow brightness compared to a clear medium, but it does not eliminate it. Our dual-colour pigments like green-to-green or yellow-to-yellow are designed specifically to work this way, maintaining daytime colour while still producing a visible glow in darkness.
Why Strontium Aluminate Outperforms Zinc Sulfide
If you have used glow products before and been disappointed, zinc sulfide is almost certainly why. It is the compound used in most cheap glow stars, craft store glow paint and budget glow items - and it produces a faint glow that fades within 30 to 60 minutes.
Strontium aluminate is a fundamentally different material. Its crystal structure creates deeper energy traps that store light energy more efficiently and release it far more slowly, producing a glow that lasts hours rather than minutes at significantly greater brightness.
For a detailed breakdown of exactly how the two materials differ - and why it matters for your project - read our strontium aluminate vs zinc sulfide comparison guide.
Frequently Asked Questions
Can you mix glow in the dark powder with acrylic paint? Yes. Clear acrylic medium gives the strongest result because full transparency means maximum light absorption and emission. Coloured acrylic paint will reduce glow brightness - how much depends on how opaque the paint is - but it does not eliminate the glow entirely. For the strongest possible glow, use a clear medium. For a coloured daytime appearance with visible glow at night, a coloured medium or our dual-colour pigments work well.
What is the best ratio for glow in the dark paint? 1 part pigment powder to 4 parts medium is the recommended starting point. Going above 1:3 causes the pigment to cluster and actually reduces glow performance. For a stronger glow, apply more layers rather than adding more pigment to a single coat.
Why is my glow in the dark paint not glowing? The most common reasons are: a dark surface underneath absorbing the light, too thin an application, insufficient charging time, or a coloured medium blocking the pigment. Apply over a white base coat, build up 2–3 coats, and charge under a 395nm UV flashlight or direct sunlight for 1–2 minutes. For a full breakdown of every possible cause, read our guide on why your glow in the dark paint isn't glowing.
How long does glow in the dark paint last after charging? Glow duration depends on the colour. Green and cyan pigments - the brightest strontium aluminate crystals - glow for up to 18 hours when fully charged. Medium brightness colours like white and blue glow for up to 12 hours. Softer warm tones like pink, orange and purple glow for around 8 hours. The glow is brightest immediately after charging and softens gradually throughout the night.
What colour glows the brightest? Green glows the brightest and longest of all colours - it is the most efficient strontium aluminate crystal structure. Cyan is a close second. Both outperform all warm colours significantly.
Is glow in the dark acrylic paint waterproof? Yes - once the acrylic medium has fully dried, the paint is water resistant and handles normal cleaning and light moisture. For outdoor use, seal with a clear outdoor varnish or UV-resistant topcoat to protect the surface long-term.
Written by the GlowThatWows team. We've tested dozens of pigment-to-medium combinations across acrylic, resin, fabric and outdoor applications to determine the most effective ratios and techniques - and we've been selling professional-grade strontium aluminate pigments since 2025 with over 500 verified customer reviews. Watch our full video tutorial above for a live demonstration of the mixing and application process.
