Scratch Magic - 10g (Large) or (Small) -5gScratch Magic will remove scratches and polish the glass from any type of watch face including Mineral Crystal, Hardlex Glass, Gorilla Glass or Sapphire Crystal. Sapphire Crystal is the hardest of all types of watch glass and is often used on expensive or designer watches.Kit Contents1pc Scratch Magic (10g) & 1pc  Polishing bob or 1c Scratch Magic (5g) Instructions for use Apply a small amount of polishing paste to the scratch being treatedUsing the felt polishing bob, rub in a circular motion either by hand or using a power toolWork the polishing bob over the scratch, applying more polishing paste as neededRepeat until the scratch is no longer visibleDeep scratches will generally take longer and require more polishing paste*Be aware that polishing glass can generate heat, excess heat may cause glass to crackThis product is sold for home use on a do-it-yourself basis. We accept no liability for personal injury or damage arising from mis-use. Please keep this product out of the reach of children.Scratch Magic can even be used to remove scratches on car windscreens, mobile phones & tablet screens.Scratch Magic will remove scratches and polish the glass from any type of watch face including Mineral Crystal, Hardlex Glass, Gorilla Glass or Sapphire Crystal. Sapphire Crystal is the hardest of all types of watch glass and is often used on expensive or designer watches.Kit Contents1pc Scratch Magic (10g) & 1pc  Polishing bob or 1c Scratch Magic (5g) and Polishing Felt BobInstructions for use Apply a small amount of polishing paste to the scratch being treatedUsing the felt polishing bob, rub in a circular motion either by hand or using a power toolWork the polishing bob over the scratch, applying more polishing paste as neededRepeat until the scratch is no longer visibleDeep scratches will generally take longer and require more polishing paste*Be aware that polishing glass can generate heat, excess heat may cause glass to crackThis product is sold for home use on a do-it-yourself basis. We accept no liability for personal injury or damage arising from mis-use. Please keep this product out of the reach of children.Scratch Magic can even be used to remove light scratches on car windscreens, mobile phones & tablet screens. It will remove scratches which are light , if you run your fingernail through and you can feel the scratch it will not remove that scratch.NOT TO BE USED ON PLASTICS