Find Fast is an important tool for the detection of decay /caries through the method of pigmentation of dental caries. Find Fast clearly differentiates clinically the two layers of carious & normal dentin by staining the outer carious dentin scarlet red yet not staining the inner normal dentin. The distinct staining of only the outer, infected carious layer provides a visible, clinically precise guide for caries removal. Detecting carious dentine during cavity preparation in restorative dentistry. Detection of dental caries in places difficult to identify and prevent excessive removal of normal dentin.