Which Ruben classification level includes superficial pigment and changes in the epidermis?

The Ruben classification system is used to categorize the degrees of skin damage based on the histological changes observed in the skin layers. Level 1 of the Ruben classification is specifically identified by superficial skin changes, such as the presence of pigment and alterations that are limited to the epidermis.

In this level, individuals may exhibit signs of sun damage or mild pigmentation changes, but the underlying dermal structures remain intact. The focus here is on the outermost layer of the skin where such surface-level concerns are addressed without deeper implications associated with more severe levels of damage. Understanding this classification is crucial for estheticians when assessing treatment options and implementing appropriate skin care regimens.