Enligt en intervju i Vulture , var effekten helt klar i CG. Ett företag som heter Lola VFX gjorde jobbet:
As Claus puts it, the company can make anyone "older, younger, thinner [or] fatter." Lola first got into de-aging in their work for X-Men: The Last Stand, but their breakout moment came on The Curious Case of Benjamin Button, where they handled the aging and de-aging of Brad Pitt and Cate Blanchett's characters. Since then, they've had a long relationship with Marvel — Lola created skinny Chris Evans for the first Captain America film — and they were brought on fairly early in the production process to handle the de-aging work in Ant-Man's prologue.
Artiklarna förklarar vidare att Marvel ville att processen helt och hållet gjordes i CGI, ingen smink eller proteser, eftersom det rör sig om hur ljuset speglar ansiktet.