None of de Armas's real hair was utilized in the movie — it was all the work of wigs. "We worked with wigs to try and grab all those bits and pieces of Marilyn's hair that we all know," hair department head Jaime Leigh McIntosh says. To her, one of the most important details to get right was Monroe's hairline. "Having her little baby hairs, the shape of the hairline, the widow's peak — and then just looking very closely at her texture, the density of her hair, how thick it was, and then moving on to shapes and styles and silhouettes."
De Armas had a total of five wigs for "Blonde," which were created by wigmaker Rob Pickens. Three of them were classic Monroe styles — two in a creamy blond and one super-platinum-blond version for the end of the film when Monroe went white blond. Then there were also two wigs that de Armas wore while in character as Norma Jeane — one brunette "which we see for a split second," McIntosh says, and one golden blond.
That said, even though de Armas's real hair didn't make an appearance in the film, McIntosh used the Olaplex No.3 Hair Perfector ($30) to treat and protect her hair underneath the wigs to keep it healthy through all the tension.
