Exfoliation

Exfoliation has several meanings:
 * Exfoliation (botany) describes the loss of leaves (or, in some cases, pieces of bark) from a plant.
 * Exfoliation (cosmetology), is a cosmetic technique aimed at removing dead skin cells from the face and body.
 * Exfoliation (geology) is a weathering process.
 * Exfoliation (material science) is the process responsible for breaking up particle aggregates.