Laundry detergent is entirely organic and biodegradable, allergen-free, respectful of our environment and our health, virtues well known to our ancestors since before polluting industrial detergents appeared, because they came from petrochemicals, our ancients used wood ash mixed with rainwater to obtain potassium hydroxide. It can be used in the machine or by hand, at all temperatures and all types of laundry, at a rate of 30 to 100 ml depending on the cleanliness and hardness of the water. Nature & Progress Label. Sales method: bottle per liter or in a 3 liter container, packaging by box possible.