Dr. Bronner's Sal Suds Liquid Cleaner is not a soap but instead is a concentrated hard-surface all-purpose cleaner. It is made with plant-based surfactants and natural fir needle and spruce essential oils (no cheap, harsh pine stump oil), without any synthetic dyes, fragrances or preservatives. Perfect for general household cleaning (dishes, floors, laundry, etc.), it cleans and rinses with exceptional power, yet it is mild and gentle on the skin. Sal Suds Liquid Cleaner is equally effective in hard or soft water, rinsing freely, hot or cold. It is cruelty-free and readily biodegradable.