Mara Roszak

Mara Roszak has been cutting, coloring, and styling hair for over two decades. She started assisting at salons in Los Angeles as a teenager and was licensed by nineteen. Today, her editorial and red-carpet work includes Emma Stone, Brie Larson, Zoe Saldaña, Ana de Armas, and Lily James.

Her point of view

Mara’s work is recognizable because it is never overworked. The hair has polish, movement, and health first; the styling supports the person instead of announcing the product. That is the standard she brings to RŌZ: start with the condition of the hair, understand what the strand can tolerate, then use only what earns its place.

Why she started RŌZ Hair

For years, Mara mixed her own backbar formulas for salon clients — removing harsh cleansing systems, heavy residue, and drying ingredients that made color-treated hair harder to maintain between services. Clients kept asking where they could buy what she was using. In 2022, after a two-year formulation process with chemists in California, she launched RŌZ Hair with Foundation Shampoo and Foundation Conditioner: the first two products from her backbar, scaled for everyday use at home.

When Mara writes here

Mara’s byline is intentionally selective. She writes when the answer depends on her direct working experience: how hair behaves on set after hours of heat and flash, why a style collapses in humidity, what keeps color looking expensive between appointments, or when the honest answer is a trim, a dermatologist, or a different treatment entirely.

Most articles on The RŌZ Guide carry the RŌZ Team byline. That means the piece was produced by the editorial team and checked for technique, ingredient accuracy, and fit with Mara’s standard before publication. Mara’s own byline is reserved for the pages where her voice and judgment are the material.

What she reviews

When Mara reviews a guide, the edit is practical, not ceremonial. She is asking whether the advice would hold up in a chair: whether it protects fine hair from being weighed down, whether it respects curly and color-treated hair, whether it overpromises on damage, and whether RŌZ is actually the right answer. If it is not, the guide has to say so.

What she uses

On set, Mara’s kit is deliberate rather than oversized: a gentle sulfate-free shampoo, a rich conditioner used mid-lengths to ends, a heat protectant, a curl-defining cream, and a finishing oil. Everything else — texture sprays, structural hairspray, boar-bristle brushes — is earned by context, not carried by habit. The through line is restraint: care first, finish second, and no product without a reason.

Press + recognition

Mara’s work has been published in Vogue, Harper’s Bazaar, W Magazine, British Vogue, and Glamour. She’s been named to multiple “best hairstylist” industry lists and is a Dyson Hair brand ambassador.