EasyGel FX25 - Silicone for Prosthesis FX and Mold -

EasyGel FX25 is a two-part platinum (addition) silicone with Shore A10 hardness, specifically formulated for the manufacture of special effects prosthetics and high-definition moulds. Its high translucency, 1:1 ratio by weight and volume, and ultra-soft behaviour make it a go-to material for FX artists who need seamless edges, pore reproduction and completely convincing artificial skin on the performer.

Technical specifications

What it is used for

EasyGel FX25 is designed for special effects professionals and students who need an ultra-soft, translucent silicone with excellent detail reproduction. Its Shore A10 hardness places it at the softest end of the EasyGel range, making it ideal both for building natural-finish prosthetics and for producing high-resolution flexible moulds.

• Special effects prosthetics: wounds, scars, facial deformations and theatrical character make-up
• Foam encapsulation for anaplastology prosthetics
• Skin and soft tissue moulds with faithful reproduction of pores and fine textures
• Character pieces with ultra-thin edges for direct make-up application over silicone
• Body part replicas for props, film and television
• Moulds for casting resins, waxes or plasters where high flexibility is required
• Reborn baby and hyperrealistic doll fabrication
• Soft tissue prototypes and replicas for medical simulation and training

How to use it

1. Prepare the surface: make sure the mould or positive you are working on is clean, dry and free of contaminants (no latex, sulphur, tin or uncured epoxy). Apply a Release agent if the surface requires it.
2. Weigh the components: mix part A and part B at a 100:100 ratio by weight or by volume. Use a precision scale to ensure the exact proportion.
3. Hand mixing: stir for 2–3 minutes with a spatula, scraping the walls and bottom of the container thoroughly to obtain a homogeneous, streak-free mixture.
4. Degassing (optional but recommended): place the mixture in a vacuum chamber for 2–3 minutes to remove air bubbles before casting or application.
5. Pigmentation and additives: if you need colour, add Key-Pigments at this stage. If you want a thixotropic texture for vertical application, incorporate Thixo Additive. For encapsulated prosthetics, add Gloomer Deadener at 180–200% of the total AB mixture.
6. Apply or pour: you have 35 minutes at 25 °C to work. For moulds, pour in a thin stream from a low point so the material flows on its own and displaces air. For layered prosthetics, apply with a spatula or brush.
7. Curing: allow to cure at room temperature for 1 hour. Heat accelerates the process; do not demould before the piece is completely firm to the touch.
8. Demoulding: demould carefully, pulling evenly. Shore A10 is very soft — handle the piece gently to avoid deforming it.

Usage tips

Ultra-thin edges on FX prosthetics

The low Shore A10 hardness of EasyGel FX25 allows the prosthetic edges to be worked down to a minimum thickness that visually blends with the performer's skin. To achieve this, apply the final peripheral layer with a fine brush in outward strokes, progressively thinning the material. Once cured, use Key-Pigments to paint the prosthetic from the inside before encapsulation, or directly in the mix during blending. If you need to encapsulate the edges to facilitate blending, apply Key-Cap Plastic as an encapsulant.

Using deadener for encapsulated prosthetics

For anaplastology or high-mobility prosthetics, you can further soften EasyGel FX25 by incorporating Gloomer Deadener into the mix. The standard ratio is 180–200% of deadener over the total AB mixture (i.e. 1A : 1B : 1.8–2D by weight). Mix thoroughly before adding pigments. This technique reduces the effective hardness below Shore A10 and improves the dynamic behaviour of the piece on the skin.

Moulds with vertical areas or counter-mould geometry

If you are working on vertical surfaces or moulds with complex geometry, add Thixo Additive to the mix to increase viscosity and prevent sagging. The thixotropic additive does not alter cure time or final mechanical properties — it only modifies the fresh material's rheology. Always use a rigid counter-mould (resin, plaster or fibre) to support the EasyGel FX25 mould during casting of the reproduction material and prevent deformation.

Frequently asked questions