Signature Fern Gel™ Guided Pen 18% HP Active- Professional Self Application MethodSignature Fern Gel Guided Pen 18% Active Blend Our Guided 18% Active teeth whitening gel is made in Canada and is designed for professional chairside use in a self administered setting. With a low sensitivity formula, this whitening gel is ideal for teens and clients with high sensitivity concerns. Proudly made in Canada, its a trusted option for clinics seeking consistent, comfortable results. Product Code: 120 012 120 048 120 096 Vessel Type: 1 bag