SOFT99 Ultra Glaco should be applied in a warm, dry, well-ventilated space out of direct sunlight. To protect your skin, we recommend wearing PB Nitrile Gloves during the application process. To achieve the quoted durability and performance benefits, it is necessary to properly clean the surfaces to be treated in advance. To do this, use Auto Finesse Vision to initially cut away any stubbornly bonded surface contaminants, and then use SOFT99 Silicone Off to remove any lingering grease and grime (put simply, the cleaner the glass is before the sealant is applied, the longer it will last). To apply the sealant, shake the bottle vigorously first to ensure that the contents are fully mixed. Next, unscrew the storage cap, place the felt pad against the glass and lightly squeeze the bottle a few times to wet the pad with product. Then work the product in to the glass in a circular fashion, using firm pressure. The resulting film should then be left to dry for 5-10 minutes before being buffed off with a PB Utility Towel. If you find the residue difficult to remove, apply a little more product and buff it off immediately (this should remove the residue).