To maintain merino's performance, it's important to invest in proper care. This powerful wash-in cleaner gently cleanses and refreshes merino wool and baselayers, safely removing dirt without stripping out the natural oils that are key to merino's performance. Contains natural cedar extract to repel moths and protect clothing. Recommended for all Merino Wool baselayers and midlayer garments, including IcebreakerA(R) and SmartwoolA(R)