Clearly Secret, streak-free, tint safe window cleaner is quite possibly the best window cleaning liquid ever made. Streak free formula for glass or plastic that sprays like water. No foam and no harsh smell. Just wipe and watch dirt, grease, water spots, smudges, fingerprints, forehead grease and just about anything else disappear. No streaks ever! Formulated with non-ionic surfactants, specialized molecules that are 100% non-toxic and all surface safe, no reactivity. 100% ammonia free and safe to use on tinted windows, clear plastic instrument panel lenses, headlamp and taillamp lenses! One gallon mixes with up to 3 gallons of distilled water to make more product.