Salon Serein Styling Director Toni Costa has earned a Master Colorist certification from the American Board of Certified Haircolorists.

Certification requires a rigorous practical examination, and 1,500 stylists in the United States have earned this designation.

Costa is a graduate of the National Academy of Hairdressing and the Clairol School of Color. Salon Serein is a boutique salon at 208 Post Road West in Westport.