We promote an excellent concept for cleaning interior glass surfaces, use one damp little waffle glass cloth and spray a small amount of Beyond-Kleen onto the damp cloth, proceed to clean the glass surface then use a second little waffle glass cloth dry to polish off for a perfect streak free finish, Beyond-Kleen contains no IPA,Alcohol,Ammonia,or solvents, which will always guarantee a streak free finish. this is also an excellent concept for anyone who details glass display cabinets for retailers.