Ashley Graham's Hairstylist Shares 11 On-Set Must Haves

Tresemmé Protecting Heat Spray ($8)

"I take the integrity of my client's hair seriously, and protecting from damage is so important to me," Marjan says. She uses this Keratin Smooth Spray for doing just that — and it also works to tame frizz and reduce breakage, according to the brand. This Tresemmé spray protects up to 450 degrees Fahrenheit, which is typically the highest hot tools go.