If you’ve ever dabbled in embellishing clothing, accessories or décor with crystals, you’ve probably run into the terms “hotfix” and “non-hotfix.” At first glance, the difference may seem technical or unimportant. After all, they both sparkle. But understanding how each one works, and when each is most effective, can make or break a project. From the way they adhere to surfaces, to their longevity and adaptability, choosing the right type of crystal is less about preference and more about purpose.
So which is better for your next creative venture?
What makes hotfix and non-hotfix different?
The distinction lies in how the crystals are applied. Hotfix crystals come pre-coated with a dry glue that activates with heat. When you press them onto fabric with an iron or heat applicator, the glue melts and bonds with the surface. They’re often seen as the quicker option, particularly for textiles.
Non-hotfix crystals don’t include that heat-activated adhesive. They need to be affixed using a separate glue, applied manually. At first this might seem less convenient, but there’s a tradeoff: control. Non-hotfix crystals can be used on materials that don’t tolerate heat, including leather, paper, plastic and more. If you’re working with unconventional surfaces or want more freedom in how your embellishments are applied, it’s worth taking a moment to explore a non-hotfix sparkle range. You’ll likely find options that feel more aligned with your project’s needs.
Is one easier to use than the other?
That depends entirely on the context. For someone working on fabric-based designs, hotfix crystals may seem more efficient. There’s no glue to measure, no mess to clean up, and the bond can be strong when done properly. But “when done properly” is the key phrase here. Not all fabrics respond well to heat, and not all irons or tools distribute it evenly. It’s surprisingly easy to misapply them or end up with uneven adhesion, especially on delicate or textured fabrics.
Non-hotfix crystals offer more flexibility. You can choose your adhesive based on the material, desired strength and finish. The process may require a bit more patience and care — tweezers, syringes or wax tools often come into play — but the results can be more consistent across varied surfaces. There’s also a certain precision involved that appeals to people who like detail-oriented tasks. Once the rhythm sets in, it becomes oddly calming.
Why surface compatibility should guide your decision
Materials matter. Hotfix crystals work best on flat, porous fabrics that can withstand high heat, such as cotton, polyester and denim. If you try to use them on leather, metal or anything heat-sensitive, you’re almost guaranteed frustration.
Non-hotfix crystals are less fussy. You can use them on curved or hard surfaces, fragile papers, textured fabrics or synthetic blends. They’re the go-to for projects involving shoes, glassware, notebooks or anything that would melt or warp under heat. This versatility makes them the more adaptable option for mixed media work or unconventional designs.
How long will each type last?
Durability comes down to two things: how well the crystal is bonded, and how the object is used or washed over time. A poorly heated hotfix crystal can detach after a few wears or washes. Likewise, using the wrong glue for non-hotfix applications can lead to peeling or sliding.
But when applied correctly, both types can be very durable. Hotfix bonds can be long-lasting on the right fabrics, especially if applied with a proper heat press. Non-hotfix crystals, with a strong flexible glue, often perform better on items exposed to moisture, bending or friction. They’re also easier to repair or replace individually if one falls off.
Creative control and stylistic freedom
Hotfix lends itself well to speed and uniformity. If you’re embellishing dozens of dance costumes or decorating fabric in bulk, the process can be efficient and repeatable. It’s particularly useful for patterns or pre-set templates where each stone lands in the same place every time.
Non-hotfix opens the door to irregular placements, detailed layering or combination with other materials. It’s favoured by artists who want more freedom in the layout, or who are working on objects that don’t conform to neat lines or standard shapes. It also allows for slower, more thoughtful design decisions, which can sometimes lead to better final results.
Final thoughts
So, which should you use? If you’re decorating heat-tolerant fabrics and want speed, hotfix could be a practical choice. If you need creative control, surface flexibility or the option to work outside traditional textiles, non-hotfix is almost certainly the better fit.
Rather than thinking in terms of better or worse, consider which tool suits the job. Both have their place. In many cases, the most successful creators are the ones who’ve learned when to use each, and how to apply them properly.
The best projects don’t come from just picking the prettiest crystal — they come from understanding the process behind the sparkle.