Most resin is vegan, but not all. Synthetic resins like epoxy, polyester, and polyurethane are derived from petroleum and contain no animal ingredients. Natural resins from tree sap (such as pine rosin or copal) are also plant-based and vegan. The major exception is shellac, which comes from insects, and certain pigments or additives mixed into resin products can introduce animal-derived ingredients.
Synthetic Resins Are Petroleum-Based
The resins most people encounter, whether for art projects, jewelry making, 3D printing, or industrial coatings, are synthetic. Epoxy resin, the most popular type for crafting, is made from a chemical called bisphenol A combined with amine-based cross-linkers. Both are derived from petroleum products, not animal sources. The same is true for polyester resin, UV resin, and polyurethane resin. Their chemical building blocks are entirely synthetic.
This means the base resin itself is vegan. No animal fats, proteins, or secretions are used in standard commercial production. If you’re buying a two-part epoxy kit or a bottle of UV-cure resin from a craft store, the resin and hardener are petroleum-derived.
Shellac: The Exception
Shellac is a natural resin secreted by lac insects, a type of scale insect in the family Kerriidae. The female lac insect is essentially immobile, encasing herself in a hard resinous shell while she feeds on tree sap. Harvesters scrape these resinous deposits from branches, then process them into flakes or liquid shellac. Because it is literally an insect-secreted substance of animal origin, shellac is not vegan.
Shellac shows up in more places than you might expect. It’s used as a wood finish, a coating on pills and candy (sometimes listed as “confectioner’s glaze”), and in some nail polishes. If a product label says “shellac” or “lac resin,” it contains an animal product. Note that CND Shellac brand nail polish is a UV-cured synthetic product and not actual shellac, despite the name.
Tree Resins Are Vegan
Natural resins harvested from trees are plant products. Pine rosin, dammar, copal, and amber are all tree-derived. They form when a tree exudes sticky sap that hardens on exposure to air. No animals are involved in their production. These resins are commonly used in varnishes, incense, and traditional art media, and they’re compatible with a vegan lifestyle.
Watch for Non-Vegan Additives
Even when the resin itself is vegan, what gets mixed into it may not be. Pigments are the biggest concern. Bone black (also sold as ivory black or animal charcoal) is a carbon pigment made by charring animal bones. Carmine, a red pigment, comes from crushed cochineal insects. Both are sometimes used to color resin products, paints, and inks.
If you’re coloring resin yourself, check whether your pigment powders or mica powders are free from these ingredients. Most modern mica pigments are mineral-based and vegan, but some specialty colors still rely on animal-derived colorants. Resin dyes made from synthetic chemicals are generally not an issue.
Molds and release agents are another spot to check. Some mold release sprays contain beeswax or lanolin. Silicone-based release agents are vegan alternatives that work just as well.
Animal Testing and Resin Products
Resin manufacturers historically used animal testing to assess chemical toxicity and environmental safety. However, the industry has been moving toward alternatives. Researchers have developed in vitro screening tools that can measure the toxicity of hydrocarbon resins without animal subjects, and these methods have proven effective enough to reduce reliance on animal testing in environmental hazard assessments. That said, “cruelty-free” certifications are uncommon in the resin industry because these products are sold as industrial or craft materials, not cosmetics. If animal testing is a concern for you, contacting the manufacturer directly is the most reliable way to find out their practices.
The Broader Environmental Picture
For vegans motivated by reducing harm to animals beyond direct ingredient sourcing, the environmental footprint of synthetic resin is worth knowing about. Petroleum-based resins are plastics, and when they break down, they become microplastics. These tiny plastic particles have been found not just in oceans and coastal areas but also in freshwater reservoirs. They enter the bodies of aquatic animals, where they can bioaccumulate chemical contaminants at concentrations up to six times higher than in the surrounding water. Microplastics also adsorb persistent organic pollutants, increasing their toxicity to marine life.
This doesn’t make synthetic resin non-vegan by standard definitions, which focus on whether animal products are used as ingredients. But if your veganism extends to minimizing ecological harm to animals, using resin sparingly and disposing of it properly matters. Never wash uncured resin down the drain, sand resin in a well-ventilated area where dust can be captured, and cure all resin waste fully before throwing it away. Fully cured resin is inert and far less likely to leach chemicals than liquid or partially cured resin.
Quick Guide by Resin Type
- Epoxy resin: Vegan. Petroleum-derived, no animal ingredients.
- UV resin: Vegan. Synthetic polymer cured by ultraviolet light.
- Polyester resin: Vegan. Petroleum-based.
- Polyurethane resin: Vegan. Synthetic.
- Tree resins (pine rosin, dammar, copal): Vegan. Plant-derived.
- Shellac: Not vegan. Secreted by lac insects.
For any pre-colored or pre-mixed resin product, check the ingredient list or contact the manufacturer to confirm the pigments and additives are also free from animal-derived materials.