Mara Roszak is one of Hollywood’s most sought-after hairstylists. In her 22-year-long career, she’s worked with A-listers and Oscar winners including Emma Stone , Zoë Saldaña , and Halle Berry . Roszak first became obsessed with hair as a teenager learning how to transform her natural curls; after years of experimenting with products, she noticed a gap in the market. “I could not find products that performed at a professional level that were clean,” she says. “The world of pro hair felt very male. I had a different perspective and different voice, and I felt like I really understood the nuance.” In 2021, she founded the hair-care line RŌZ to fill that gap.

Earlier this year, RŌZ launched its full product line in Sephora just ten days after Roszak gave birth to her

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