Gelish PH BOND is used in the preparation of the nail as a dehydrating step. This product is essential in the proper preparation of the nail plate. PHBOND can be used in all types of services including acrylic applications, gel nails, any nail adhesives and tip applications, as well as prior to any base coat or nail strengthener for optimal performance. Comes in the new bottle. Size 1/2 oz -15ml.