Mix equal parts of A and B and you have about five minutes to sculpt a fake burn before the material sets hard. That short open time is the whole personality of this product — it is what makes 3rd Degree fast enough for film work and unforgiving enough to ruin a first attempt. Special effects artists, theater makeup crews, and prosthetic makers use it to build realistic injuries straight on the body or pour small pieces in molds. This guide covers what the compound actually is, how to mix and apply it, what it costs, and the mistakes that waste a batch.
What Exactly Is 3rd Degree Silicone Modeling Compound?
3rd Degree is a two-part platinum-cure silicone sold specifically as a special effects modeling compound, not a general-purpose craft silicone. Retailers list it under names like “3rd Degree – Kit, Silicone Modeling Compound” and “3rd Degree Silicone Compound,” and it is made in the USA according to one seller’s listing for the clear 2 oz kit.
The kit arrives as two separate components — Part A and Part B — that stay inert until you combine them. Once mixed, a chemical cure begins immediately and cannot be paused. The standard kit size is 2 oz total, usually 1 oz of each part, though a 4 oz size also appears in current retail listings. A separate “Pourable Silicone Modeling Compound” line exists for mold casting, and color options currently include Clear, Light, Medium, Dark, and Blood Red.
Because platinum silicone is not latex, a reseller notes it can serve as a latex-allergy alternative to liquid latex — a meaningful option for artists who react to traditional appliance adhesives.
How Do You Mix And Apply It?
Measure equal parts of Part A and Part B onto a mixing palette, blend them fully, then move fast. The compound starts curing the moment the two parts touch, so everything downstream — sculpting, transferring to skin, blending edges — happens inside a five-to-ten-minute window.
Here is the working sequence that produces a usable effect:
- Mix 1:1. Take equal parts from each jar onto a palette and stir until the color and texture are uniform with no streaks.
- Transfer quickly. Move the mixed compound onto skin or into a mold before it stiffens.
- Sculpt the shape. Use tools to build the wound edge, ridge, or burn texture directly on the body or in the mold.
- Blend the edges. While the material is still uncured, thin and feather the borders with 99% isopropyl alcohol for a smoother transition to skin.
- Color it. Depending on retailer guidance, you can tint before or after cure using silicone-safe tints, cream makeup, alcohol-based makeup, acrylic paint, or blood effects.
Adhesion varies by seller: some state the compound sticks using itself as the adhesive, while others recommend a silicone medical adhesive for a stronger hold. Either way, the cure finishes in about five minutes and rarely takes longer than ten. If you are comparing kits before buying, this breakdown of tested 3rd Degree silicone options covers the sizes and color variants side by side.
| Spec | Detail | What It Means On Set |
|---|---|---|
| Type | Two-part platinum silicone | Latex-free alternative to liquid latex |
| Mix ratio | 1:1 Part A to Part B | Equal scoops, no measuring scale needed |
| Cure time | About 5–10 minutes | Very short open time; sculpt immediately |
| Kit size | 2 oz (1 oz each part); 4 oz also listed | 2 oz covers small wound effects |
| Colors | Clear, Light, Medium, Dark, Blood Red | Match skin tone before or after cure |
| Edge blending | 99% isopropyl alcohol | Feathers borders while uncured |
| Typical price | About $26–$30 for the 2 oz kit | US retail; UK kits start around £24 |
What Does It Cost And Where Does It Go Wrong?
Expect to pay roughly $26 to $30 for a 2 oz kit in the US, with UK retailers listing the 2 oz kit from about £24. Those prices come from current retail listings and shift with sales.
Prices found in the current US retail listings:
- 3rd Degree Kit, Silicone Modeling Compound 2 oz at Nigel Beauty: $30.00
- 3rd Degree Silicone Compound 2 oz at Holly North: $26.25
- 3rd Degree Kit at Gem McDowell: $30.00
- 3rd Degree 2 x 1 oz kit at UK retailers: from £24.00
A US$12.20 marketplace listing also circulates, but treat it with caution — the page metadata does not match the product type, which is a common sign of a mismatched or mislabeled listing.
Most failed batches trace back to the same handful of errors. Mixing the parts in the wrong ratio instead of a true 1:1 is the most common. Cross-contaminating the jars or tools between Part A and Part B is the next — a dirty stir stick can start the cure inside a jar and ruin the rest of it. Letting Part A and Part B containers share tools is the same mistake wearing a different hat. Waiting too long after mixing kills the sculpt, because the compound can harden before the wound texture is finished. One seller also warns to avoid products containing sulfur or latex until the compound is fully set, and every listing stresses working at room temperature.
FAQs
Is 3rd Degree silicone safe for people with a latex allergy?
That makes it a reasonable option for artists who react to traditional latex appliances. As with any skin-contact material, test a small area first and stop if irritation appears.
How long do I actually have to sculpt before it sets?
Plan on five to ten minutes of working time after mixing, depending on the source and room conditions. That window starts the instant the two parts combine, so set out every tool you need before you mix. If a batch starts firming up mid-sculpt, it is done — start fresh.
Can I reuse a cured 3rd Degree effect more than once?
Durability depends on thickness and how carefully the piece is removed and stored. Thin, feathered edges are the most likely to tear, so handle those pieces gently between wears.
References & Sources
- Nigel Beauty. “3rd Degree – Kit, Silicone Modeling Compound 2oz” Product listing confirming kit size, 1:1 mixing, cure time, and $30.00 price.
- Holly North. “3rd Degree Silicone Compound 2oz” Listing confirming color variants, blend-with-alcohol guidance, and $26.25 price.
- Gem McDowell. “3rd Degree Silicone Molding Compound Wound & Scar Prosthetic” Listing confirming $30.00 current price, mold and skin use, and handling cautions.