All purpose concentrated. Use 1 bottle for 2 lb dry fabric. Add 1 cup salt to dyebath for cotton, rayon, ramie, linen, or blends. Polyester or acrylic blends dye lighter. Not recommended for 100% polyester, acrylic, or fabrics with special finishes, rubber-backing, cold water wash, or labeled Dry Clean Only. If in doubt, test dye a swatch. Never pour dye on fabric. Wear rubber gloves. RIT will stain plastic, fiberglass or worn porcelain tub. Use RIT Color Remover before dyeing to a lighter or different color. Wash dyes item separately in cool water. For dark or bright colors, double dye quantity. Made in the USA.