Whitening gel based on sodium perborate and hydrogen peroxide at 20% for non-vital teeth. Excellent consistency: paste with ideal viscosity after handling. Versatility: mixing in the ideal proportions for use (2:1 or 1:1). It can be mixed with hydrogen peroxide (that comes with the product), with distilled water, or with saline. Minimizes side effects. Ideal viscosity after handling. It can be mixed in the proportion of 1 part of powder for 1 part of liquid or 2 parts of powder for 1 part of liquid.