Unique Two-Step Process Arcti Clean Bottle 1 Thermal Material Remover quickly emulsifies & dissolves the existing thermal grease or pad from the CPU and/or heatsink so that it can easily be removed with a clean cloth or paper towel. Then, a few drops of Arcti Clean Bottle 2 Thermal Surface Purifier & some gentle wiping removes the remaining residue & inhibits corrosion on the copper or aluminium surface. Arcti Clean Bottle 1: Thermal Material Remover Arcti Clean 1 uses a proprietary combination of non-toxic biodegradable solvents to emulsify thermal greases or thermal pads. The citrus & soy-based solvents in Arcti Clean 1 match or exceed many hazardous & volatile solvents such as fluorinated & chlorinated organic solvents, acetone, MEK (methyl ethyl ketone), mineral spirits, isopropyl alcohol, & toluene. Arcti Clean Bottle 2: Thermal Surface Purifier The cationic surfactants in Arcti Clean 2 remove any residue left by the Arcti Clean 1, leaving a pristine surface for the application of a new thermal interface material. It also incorporates advanced flash corrosion inhibitors that minimise the corrosion layer on copper & aluminium allowing for more intimate contact between the thermal interface material & the heatsink.