Signature Fern Gel™ Pro 25% HP Active - Clinical UseProfessional Teeth Whitening Gel Pro 25% HP Active Signature Fern Gel Canadian made, professional in office teeth whitening gel designed to deliver strong results with minimal to no sensitivity Product Code: #100 001 #100 008 #100 016 Vessel Type: 1 Tube = 3 x 3ml Syringes Use: Chair side & In Office Only (Professional Clinical Use) Key Benefits 25% active hydrogen peroxide & carbamide peroxide blend for professional whitening Balanced strength