Red Relief is a two part system that, when mixed together, creates a stable formula for direct application to red stains and others that were once thought impossible to remove. Gets all the red out every time. This product is safe on carpets and fabrics where other products would discolor or bleach the item. Use lower temperature and still have a much better result. A two-part product that activates on missing. Your will find yourself using less product than with the competitors' brands.