SOME BY MI Retinol Intense Reactivating Serum – 1.01oz, 30ml – Korean Bakuchiol Retinol Serum for Face Firming – Improves Signs of Aging, Minimizes Pore Size & Refines Skin Texture – Korean Skin Care. Brand new SOME BY MI Retinol Intense Reactivating Serum, 1.01oz (30ml). Korean skincare formula featuring retinol and bakuchiol designed to help improve the appearance of fine lines, refine skin texture, minimize the look of pores, and promote a smoother, firmer-looking complexion.