Oregon Esthetician State Board

Where is the thinnest skin located on the body?

1. On the palms

2. On the soles

3. On the eyelids

4. On the forehead

The correct answer is: On the eyelids

The thinnest skin on the body is found on the eyelids, which can be attributed to several factors related to their unique anatomical and functional characteristics. The skin on the eyelids is typically only 0.5 mm thick, composed of a delicate layer of dermal tissues that allows for flexibility and movement required for blinking and facial expressions. This thin skin is designed to be sensitive to protect the eyes and facilitate various functions, such as providing a barrier against external irritants. In contrast, the skin on the palms and soles is notably thicker to withstand friction and abrasion from daily activities and walking. The forehead skin is also thicker than that on the eyelids, as it serves to protect against environmental factors like sun exposure while still allowing for facial movement and expression. Therefore, the unique composition and the protective requirements of the eyelids make them the area with the thinnest skin on the human body.