"We Had So Many Wigs!" — and Other Beauty Secrets From Impeachment: American Crime Story

Because of Feldstein's allergies to certain products, there were limits to what the makeup artists were able to use while transforming her. One product that came in handy during the entire production process, according to Sillay, was the Revlon Super Lustrous Lipstick ($6).

"That was one thing on [Feldstein's] list that she didn't have any allergies to," she said. "Revlon was one of the main cosmetics lines we used because they still have everything that they sold in the '90s. It was really easy to pull those colors for her because a lot of them still have the same names."