Teresa James , last year , believes the pain involved is worth it for a bright smile . Lisa Arbiter , 33 , has bought high-strength bleach from America for 13 years . Donna Billson started before her wedding 40 and is already a convert .
Teresa James , 40 , believes the pain involved is worth it for a bright smile . Lisa Arbiter , 33 , has bought high-strength bleach from America for 13 years . Donna Billson started before her wedding last year and is already a convert .