The cold foam will be ready to demold in approximately 30 minutes. Because cold foam is not as soft and stretchy as foam latex, care must be taken when opening the mold so that you don’t tear the appliance or separate the outer skin from the inner foam structure.
The formula for Kryolan® cold foam is designed to make it safer and easier to use and to hold up to repeated washings; it can be applied and worn immediately after demolding, though you might choose to wash it first and let it dry as you do with foam latex pieces. Cold foam takes paint and makeup well and can be used with any of the adhesives used for silicone and foam latex. From a cost standpoint, cold foam is less expensive than foam latex.
Cold foam is just another choice available to you as a makeup effects designer, and the decision to use it instead of another material should be based on a number of factors, not the least of which is skin sensitivity of the performer who will wear it. Kryolan’s Research and Development department continues to refine the formula, and has stated that "one in a million people" might be sensitive to the foam and develop a rash; so far there have been no breathing or respiratory side effects. Just as with every substance you work with as a makeup artist, you should be familiar with each product; MSDS product sheets from the manufacturers are available and contain information on just about everything imaginable for their products. All you have to do is ask for them.