How long do human skin cells take to move from the basal layer to the skin surface?

In the context of human skin biology, keratinocytes are continuously formed by mitosis in the basal layer of the epidermis. From their formation in this layer, these cells move peripherally toward the skin surface, where they are eventually lost through desquamation.1

The time required for this passage through the epidermis—from initial formation to desquamation—is estimated to be between one and three months.2