Senka Perfect Whip Collagen In BT21 Collaboration is a Japanese facial cleansing foam featuring limited-edition BT21 packaging. Formulated with collagen and four moisturizing ingredients, it deeply cleanses pores while keeping skin soft, hydrated, and firm. The rich, micro-foam texture gently removes dirt and excess oil without stripping moisture, leaving a glossy, smooth finish. Best suited for all skin types, especially those seeking gentle cleansing with added hydration and anti-aging benefits. Ideal for BT21 fans and skincare enthusiasts alike.