Burdock is another famous weed. It can be combined with dandelion tea to create a powerful cleansing and healing tonic to help purify the blood and balance oily skin, acne and rosacea. Native to Europe and Northern Asia, it is now common in the U.S. as well. It has detoxifying antibacterial, anti-fungal, anti-inflammatory properties, and has traditionally been used as a topical remedy for eczema, acne and psoriasis. Burdock roots contain polysaccharides, volatile oils, and minerals – including calcium and phosphorus – as well as vitamins like thiamin, riboflavin, niacin and ascorbic acid.