Gear guide
Best UV resin for coating polymer clay and air dry clay
Picked from Amazon listings, not hands-on tests. How we pick
A coat of UV resin gives baked polymer clay or fully dry air dry clay a glossy, hard surface in minutes, but the bottles differ more than their labels suggest. Viscosity decides how the resin behaves: thicker resin stays put and domes on a flat charm, thinner resin brushes out and runs into texture. The listings here state figures from 500 to 2000 cps, and several state none. Bottle size matters too, because a coat on earrings uses very little and UV resin is sold by weight, from 10 g brush bottles to 300 g bottles. This guide compares seven resins by what their listings state: weight, hard type, viscosity, cure time and any tack-free or yellowing claims. Nobody here tested them. The method is the same for all: wipe the finished piece with isopropyl alcohol, apply a thin coat, cure under a 365 to 405 nm lamp, and wipe off any tacky film with alcohol after the last layer.
Compare the picks
| Pick | Weight | Type | Viscosity | Cure time | Price | Per g | Link |
|---|---|---|---|---|---|---|---|
 KISREL hard type UV resin, 300 g bottle | 300 g | Hard | not stated | 1-3 min with 36 W lamp | - | - | Amazon |
 FUNSHOWCASE coating UV resin with brush, 2 x 10 g | 2 x 10 g (10 ml each) | Coating, gloss + matte | 1800 cP and 500 cP | not stated | - | - | Amazon |
 Bsrezn hard UV resin, 100 g (3.5 oz) bottle | 100 g (3.5 oz) | Hard | 2000 cps | not stated | - | - | Amazon |
 LET'S RESIN hard UV resin, 300 g bottle | 300 g | Hard | 2000 cps | Minutes (lamp not stated) | - | - | Amazon |
 Resiners low viscosity UV resin, 100 g bottle | 100 g | not stated | 1500 cps at 25 C | not stated | - | - | Amazon |
 OSBANG crystal clear hard UV resin, 100 g | 100 g | Hard | not stated | Minutes with 36 W lamp | - | - | Amazon |
 YIEHO hard type UV resin, 300 g bottle | 300 g | Hard | Low (no figure) | not stated | - | - | Amazon |
Facts are taken from each Amazon listing. Prices are checked daily and shown with their date.
If you just want one
- Closest match for the jobKISREL hard type UV resin, 300 g bottleNames the lamp and the time: 1 to 3 minutes of curing under a 36W UV lamp.
- Most for the money on paperFUNSHOWCASE coating UV resin with brush, 2 x 10 gEach 10 ml (10 g) bottle has a brush cap, so the resin goes on like a glaze without a separate brush.
- Most complete listingBsrezn hard UV resin, 100 g (3.5 oz) bottleThe listing names protective coating and small jewelry such as earrings and pendants among its uses.
The picks in detail
Pick 1 · KISREL
KISREL hard type UV resin, 300 g bottle
See price on AmazonA 300 g bottle of hard type UV resin sold for jewelry making. The listing states a 1 to 3 minute cure under a 36W UV lamp and a hard, non-stick surface after curing.
What the listing offers
- Names the lamp and the time: 1 to 3 minutes of curing under a 36W UV lamp.
- The listing states the cured piece is hard, non-stick and crystal clear, with a reduced odor formula.
- Described as self-leveling, and the listing says mica powder, colorants, glitter and sequins can be mixed in.
Limits to know
- No viscosity or hardness figure is given, so there is no number to compare with the 2000 cps resins.
- The listing advises not touching a piece right after curing, until it has cooled, to avoid leaving fingerprints.
Pick 2 · FUNSHOWCASE
FUNSHOWCASE coating UV resin with brush, 2 x 10 g
See price on AmazonA brush-cap coating set: one gloss and one matte bottle of UV craft resin, 10 g each. The only listing in this guide that names clay, so it suits glazing a few clay charms rather than casting.
What the listing offers
- Each 10 ml (10 g) bottle has a brush cap, so the resin goes on like a glaze without a separate brush.
- The listing names clay among its surfaces, along with tumblers, jewelry, wood, paper, glass and dried flowers.
- Figures are stated: viscosity 1800 cP with hardness 83 +/- 3D and shrinkage under 3 percent, and 500 cP with hardness 70 +/- 3D.
Limits to know
- Two 10 g bottles is a very small amount, the smallest pack in this guide by a wide margin.
- No cure time or lamp wattage is stated, and the listing does not say clearly which figures belong to the matte bottle.
Pick 3 · Bsrezn
Bsrezn hard UV resin, 100 g (3.5 oz) bottle
See price on AmazonA 100 g bottle of premixed hard UV resin. The listing names protective coating as a use and states 2000 cps viscosity and 85D hardness, a modest size for a first try on clay.
What the listing offers
- The listing names protective coating and small jewelry such as earrings and pendants among its uses.
- States a shrinkage rate under 2 percent and a hardness rating of 85D, with a yellow-resistant finish.
- Viscosity is stated as 2000 cps, described as low and self-degassing for thin, even layers.
Limits to know
- No cure time or lamp wattage is stated in the listing.
- No brush applicator is mentioned, and clay is not named among the uses.
Pick 4 · LET'S RESIN
LET'S RESIN hard UV resin, 300 g bottle
See price on AmazonA 300 g hard UV resin for casting and silicone molds. The listing states a low viscosity of 2000 cps, shrinkage under 2 percent and curing with UV light in minutes, without naming a lamp.
What the listing offers
- Viscosity is stated at 2000 cps, and the listing says it flows smoothly into tiny molds.
- Less than 2 percent shrinkage is stated, and resin earrings are named among the uses.
- The listing describes a low odor formula with enhanced anti-yellowing properties, as the maker's claim.
Limits to know
- Cure time is given only as minutes, and no lamp wattage or wavelength is named.
- High hardness is claimed without a Shore figure, unlike the two 85D listings in this guide.
Pick 5 · Resiners
Resiners low viscosity UV resin, 100 g bottle
See price on AmazonA 100 g bottle of thin UV resin with a stated viscosity of 1500 cps at 25 C, the lowest figure among the full-size bottles in this guide. A thin resin for a brushed coat on textured clay.
What the listing offers
- Viscosity is stated as 1500 cps at 25 C, and the listing compares it with thicker 2000 cps resins.
- States less than 2 percent shrinkage during curing, and scratch resistance.
- States a low-odor formula with UV stabilizers for yellowing resistance.
Limits to know
- The listing does not say hard or soft type, and gives no cure time or lamp wattage.
- It is written for molds and small casts: clay and coating are not mentioned.
Pick 6 · OSBANG
OSBANG crystal clear hard UV resin, 100 g
See price on AmazonA 100 g bottle of hard UV resin. The listing says the formula was improved to reduce sticky and tacky surfaces and names coating as a use, the two points a clay coater looks for.
What the listing offers
- The listing says the formula was improved to reduce sticky and tacky issues, with low shrinkage and yellowing resistance.
- Names coating among its uses, next to jewelry making, casting and craft decorations.
- States a cure in minutes with a 36 W UV lamp or sunlight, and notes that a darker added color means a longer cure.
Limits to know
- No viscosity figure is stated, so it is unclear whether it domes or brushes out thin.
- Cure time is given only as minutes with a 36 W lamp, without a number.
Pick 7 · YIEHO
YIEHO hard type UV resin, 300 g bottle
See price on AmazonA 300 g bottle of hard type UV resin. The listing names its ingredients, mentions a Safety Data Sheet and REACH requirements and describes low viscosity, but gives no cure time or lamp.
What the listing offers
- The listing names the resin chemistry: bisphenol A epoxy acrylate, polyurethane acrylate and epoxy acrylate.
- States that a Safety Data Sheet is available and that the ingredients meet REACH requirements.
- Comes with a detailed instruction manual covering how to avoid bubbles and improve curing, per the listing.
Limits to know
- No cure time, lamp wattage or wavelength is stated in the listing bullets.
- Low viscosity and super hard are claimed with no cps or Shore figure to compare.
Read before you buy
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Resin and Mold chooses every product independently from what its Amazon listing states. We may earn a commission from the links above. As an Amazon Associate I earn from qualifying purchases.