Persil & nbsp; Black & amp; Dark & nbsp; Gel 25p 1.5L Washing gel for dark fabrics, plain and colored. A special formula revives the colors and prevents fading. Black stays black and white stays white. Perfect for washing: cotton, jeans, linen, silk, synthetics and viscose. Performance: 1.5 liters of washing gel is enough for 25 washes. & Nbsp;