Most listings are labeled for children 4 years and up. Check the specific product page and packaging for exact age guidance and any applicable warnings (for example, choking hazards).
Several craft elements are described as reusable: the squish sand is said not to dry out so it can be stored and played with repeatedly, and hair-bead hairstyles can be redone multiple times using the included beads and water.
Surprises range from single-digit sets up to 30+ items and commonly include clothing/fashions, shoes, small accessories and charms, craft tools like rubbing plates and crayons, and activity components such as paper fashions or snow powder depending on the kit.