Koch-Chemie (GS) Green Star | Universal Cleaner

Koch Chemie Green Star (GS) is a highly concentrated universal cleaner and degreaser designed for both interior and exterior automotive cleaning. Trusted by professional detailers worldwide, Green Star safely removes dirt, grease, oils, road grime, and organic contamination from a wide range of surfaces while remaining free from solvents and caustic chemicals. Features & Benefits Highly concentrated all-purpose cleaner (APC) Suitable for interior and exterior detailing Removes grease, oils, traffic film, and organic contamination Safe on plastics, trims, engine bays, tyres, fabrics, and more Can be diluted for different cleaning applications Free from solvents and harsh caustic ingredients Ideal for professional and enthusiast detailing Works with spray bottles, pump sprayers, and foam systems Koch Chemie Green Star is one of the most versatile and widely respected all-purpose cleaners in modern detailing. Developed in Germany and used extensively in professional detailing environments, Green Star is engineered to tackle heavy dirt, oils, grease, traffic film, and organic contamination while remaining safe for regular use on automotive surfaces. Unlike many harsh degreasers or generic APCs, Green Star combines strong cleaning performance with a safer, more refined chemistry. The formula is free from solvents and aggressive caustic ingredients, making it suitable for use across a broad range of detailing applications when diluted correctly. This versatility is one of the biggest reasons Green Star has become a staple product for professional detailers. It can be used for: Interior plastics and trims Engine bay cleaning Tyre and rubber cleaning Door jambs and fuel fillers Pre-wash and traffic film removal Fabric and carpet cleaning General maintenance cleaning The concentrated formula allows users to tailor cleaning strength depending on the task. Heavier dilutions can be used for delicate interior cleaning, while stronger mixes are suitable for tyres, engine bays, and heavily contaminated exterior areas. For exterior maintenance, Green Star pairs exceptionally well with products such as Koch Chemie Gentle Snow Foam and Koch Chemie Protector Wax, creating a complete cleaning and protection system. Inside the vehicle, it can safely clean plastics, trims, rubber mats, pedals, and other high-contact surfaces when diluted appropriately. Unlike many lower-quality APCs, Green Star does not leave behind heavy residues or excessive gloss when wiped correctly. For professionals, the ability to use one product across multiple stages of detailing improves efficiency, reduces bottle clutter, and simplifies workflow management. Pro Tip One of the best uses for Green Star is as a tyre and rubber cleaner before applying dressings or coatings. Properly cleaning tyres removes old silicone dressings, browning, and embedded grime, allowing new tyre dressings to bond more evenly and last significantly longer. For heavily contaminated tyres, multiple cleaning passes may be required before the foam remains white during agitation. This is a strong indication the rubber has been properly cleaned. Frequently Asked Questions What is Koch Chemie Green Star used for? Green Star is a highly versatile APC used for interior cleaning, tyres, engine bays, door jambs, fabrics, and exterior pre-wash applications. Is Green Star safe for interiors? Yes. When diluted correctly, Green Star is safe for many interior plastics, trims, rubber surfaces, and fabrics. Can Green Star be used on coated vehicles? Yes, although stronger dilutions should be used carefully around existing protection layers. Does Green Star need to be diluted? Yes. Green Star is highly concentrated and should be diluted depending on the cleaning task and surface sensitivity.