Beauty Inside Out rounds up Hollywood beauty, fitness and wellness news, from products, pop-ups and trends to spa, salon and fitness studio openings. No cuts, no color, just deeply restorative hair and scalp treatments are what you will find on the menu at celebrity hair guru Philip B.’s appointment-only WeHo atelier. Brand-new — and perfect for reviving hair that’s been overexposed to a summer’s worth of sun, sand and swim  — is the Signature Oil Treatment ($700). The treatment starts with Philip thoroughly exfoliating the scalp using his Stroke of Genius brush before applying his cult Rejuvenating Oil, which Nicole Kidman uses to prep for the red carpet by letting it soak in her hair overnight. Custom blended with actives like pharmaceutical-grade peppermint oil to relieve tension in the scalp muscles, CBD oil to treat psoriasis and lavender oil for dehydration, the bespoke blend is massaged into the scalp and warmed to penetrate the follicle. Hair is then cleansed and conditioned, and blown out leaving it looking and feeling like new. “The treatment detoxes and stimulates the scalp and the oil is like food for the hair,” says Philip, who has worked with Mick Jagger, Iman and ...