Yeah Dr Bonner's is fine. It's just a castille soap. Any simple soap, animal or vegetable will do. Just avoid any detergents with enzymes, bleaching agents and phosphates. (if you're being denimnerdy). Extra nerdy people could try a specialist denim detergent. There are several available, like Sugarcane's 2 step detergent. The greycast's may have turned a shade darker due to oxidation (if you leave a pair of jeans hanging, out of the sunlight, it will gradually darken), and shrinkage. Not caused by the cold, just the relaxing of the yarns after soaking in water. |