Final answer:
Superficial chemical peels affect only the epidermis, using mild chemicals to regenerate healthier skin while increasing sensitivity to the sun.
Step-by-step explanation:
Superficial chemical peels can affect only the epidermis, which is the outermost layer of the skin. These peels involve the use of mild chemicals to reduce the microbial load on the skin, resulting in a removal of the uppermost layer and promoting regrowth of new, healthy skin. During the healing process, skin sensitivity to the sun can increase, hence, exposure to sunlight should be limited to prevent any further damage.