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Contents

• Introduction
• Casein and Ammonium Carbonate Recipe
• Casein Borax Recipe

Introduction

Like egg, casein is a type of Tempera painting. Being quick drying, it will allow for overpainting, but stands on its own as a unique technique. Casein is a water medium with very versatile effects. It is known to have a robust body, producing a distinctive matte or semi-matte finish. It has the ease of a water medium, yet will take a Dammar Varnish to simulate the look of an oil painting. Wet Casein paint will keep for up to two weeks if refrigerated. It is important to test this paint to be sure your ratios are correct. Paint a small swatch on cardboard and let it dry for at least one hour. If it rubs off, you need to increase the amount of binder.

Recipe 1: Casein and Ammonium Carbonate

Sift 2 parts Casein into half of your water (8 parts). Stir thoroughly to avoid lumps. When mixture is smooth, stir in 1 part ammonium carbonate (also called Bakers Ammonia.) Let this mixture stand for at least half an hour until clear, then stir in the remaining water. Using a palette knife, combine wetted pigments 1 to 1 with the casein paste to form a thick paint, adding water to achieve the desired consistency. *If clear liquid ammonia is used, be aware that you may need to reduce the amount of water in the mixture. Be sure to use the clear product, not a milky one, available at hardware stores or where cleaning supplies or sold. There are various brands such as Parson's or White Rose.


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Recipe 2: Casein Borax Paint

Sift casein into water and soak 12 hours or overnight. Add hot water to Borax, stirring until dissolved. Stir this mixture into the casein and allow it to sit for at least one hour, possibly longer, until the Casein particles have all absorbed. You should have a yellow, translucent mixture. Heat this mixture to 140 degrees fahrenheit using a double boiler then allow it to cool. It will become syrup-like and can then be mixed with pigments. Pre-wet your pigments with distilled water and add the casein syrup to the pigments until you have the right proportions. This will depend on the pigment used and color desired. Be sure to do the recommended testing to be sure the casein/pigment ratio is correct. Thin this paint with water for use.
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More Artist's Paint Recipes:

• Oil Paints
• Egg Tempera
• Watercolor and Gouache
• Glue Paints
• Encaustic
• Pastels
• Gesso
• Acrylic
• Dammar Varnish
• Native American Arts
• Color Mixing Guide