If you're interested in trying Woolite's Extra Dark Care detergent you'll want to visit their website to claim your free sample! To be eligible you'll need to register by filling in your basic info (name, address, age) and a 60ml sample sachet will be mailed to you within 4-6 weeks. Free samples are first come, first serve with 100,000 60 mL sachets available. Limit of one per household.