Steeler Troy Polamalu’s Mane Insured for $1 Million; OPI Says It’s Not for Sale

• Head & Shoulders has insured Pittsburgh Steeler Troy Polamalu’s wild mane for $1 million. [People Style Watch]

• Katy Perry has rainbow highlights. [Girls in the Beauty Dept./Glamour]

• OPI Products Inc. has denied rumors that it’s up for auction. [WWD]

• Serena Williams stepped out this week rocking plain red nails on her right hand, and a jeweled manicure on her left. [Girls in the Beauty Department/Glamour]

Giorgio Armani Parfums has appointed Véronique Gautier as its international general manager. [WWD]

• Here’s a guide to looking good after you leave the gym. Hint: Don’t overdo it. [Daily Beauty Reporter Blog/Allure]