According to special makeup effects designer on the film, Arjen Tuiten, it took about 6 and a half hours to complete Samara's makeup and her costume featured a water rig under the dress that allowed the character to constantly drip water.
This is the first film in the series that the makeup effects were not done by Rick Baker, who had the previous two. Rick retired from the industry in early 2015 and left his studio, Cinovation, to his protégée Arjen Tuiten, who had worked with him on Maleficent. While Rick had no involvement with this project, some of his crew, who had worked on the previous two with him, worked on this film with Arjen at his studio now called R-E-N.
Originally set for release in November 2015, it was pushed back several times due to studio delays. The film will finally be released in most countries in February 2017, almost 3 years after shooting occurred.