Understanding the Skin Layers of Palms and Soles: A 5-Layer Structure

The palmar (palm) and plantar (sole) skin does not have the typical 7 epidermal layers observed in other body areas with thin skin. Instead, palmar and plantar skin contains 5 distinct epidermal layers: stratum corneum, lucidum, granulosum, spinosum, and basale.

There isn't any stratum granulosum.