Seventh Generation Natural 2x Concentrated Laundry Detergent effectively removes stains, dirt, and grease. Each capful of this plant-derived, biodegradable forumula is non-toxic, hypoallergenic and does not contain optical brighteners. Septic-safe and effective in hot or cold water, a little goes a long way with our concentrated formula. Scented with 100% whole essential oils & botanical extracts, or available in an unscented Free & Clear version, it"s formulated to work well in both standard and high efficiency machines.