Puffiair Diffuser Pen Natural Mullein Leaf Aromatherapy Inhaler Lung Cleanser Herbal Mullein Diffuser Pen and Puffiair price What's the Best Form of Mullein Extract? Betterbrand mullein vapes TikTok Shop Frontier Co op Mullein Leaf, Cut & Sifted, Organic 1 lb. Mullein (pronounced mull in) is a tall, flowering plant that grows in many parts of the U.S. and Europe that has been used in herbal medicine since ancient times. People who have been