“In my grief, I used her ashes to experiment, developing a safe formula to incorporate them into tattoo ink for a memorial tattoo,” Parnell said. Cremation Tattoos has developed a patent-pending, six-step procedure designed to refine and sterilize cremated remains before incorporating them into tattoo ink. “In my grief, I used her ashes to experiment, developing a safe formula to incorporate them into tattoo ink for a memorial tattoo.”