It's normal for scabs to develop on the treated area after getting powder brows. Several variables, including the person's skin type, the artist's technique, and the aftercare routine, can affect how long scabs lasts. Scabbing generally lasts between 7 and 10 days, though it varies from person to person.   It is crucial to avoid picking or scratching the scabs during the healing process to prevent dislodging of the pigment. Dislodged pigment can lead to scarring or uneven healing. Therefore, it’s advised to let the scabs naturally fall off on their own.