Milk Peel is a toner used with a cotton pad that hydrates with emollients while exfoliating with LHA. Ferulic Brew is a leave-on treatment applied with palms of hands that can be used as either a liquid serum or pre-serum treatment to enhance a routine. Both Milk Peel Toner and Ferulic Brew Facial Treatment are for all skin types, even sensitive skin. However, Milk Peel is ideal for more dry or compromised skin types.