They are described as waterproof and sweatproof and typically stay on for 2–3 days.
Cut out the chosen scar, remove the clear plastic film, place the tattoo face-down on clean skin, hold a wet towel over the back for about 20 seconds, then peel off the backing.
Suggested removers include baby oil, makeup remover, cleansing oil, or rubbing alcohol; the listing also notes they can be removed with common household items.
They are shown as suitable for areas such as the face (including cheeks) and arms and are described as adhering well to skin.
The product details are inconsistent: one part lists a “Suggested Age: Adult,” while other text states they are “designed for both kids and adults.” The listing provides both mentions, so verify the product page or packaging for the seller’s final age guidance.