<P> Located between the stratum granulosum and stratum corneum layers, it is composed of three to five layers of dead, flattened keratinocytes . The keratinocytes of the stratum lucidum do not feature distinct boundaries and are filled with eleidin, an intermediate form of keratin . They are surrounded by an oily substance that is the result of the exocytosis of lamellar bodies accumulated while the keratinocytes are moving through the stratum spinosum and stratum granulosum . </P> <P> The thickness of the lucidum is controlled by the rate of mitosis (division) of the epidermal cells . In addition, melanosomes determine the darkness of the stratum lucidum . </P>

What is the function of the stratum lucidum