This is a set of 28 packets each of fresh vitamin and fresh retinol. ・Yunth Fresh VC Whitening Serum 1ml x 28 packets (Mickey, Minnie) Medicinal Whitening Essence PVC Whitening x Blemish Care This is for use after washing your face. ・Yunth Fresh VC Derma Serum 1ml x 28 packets (Chip and Dale) Yunth Pure VA Derma Serum 1g x 28 packets Wrinkle Improvement x Prevention of Rough Skin This is for use after applying lotion. As a regular member, I contacted the official website and confirmed that these two can be used together. Mickey Minnie Chip Dale Limited Edition Design