If it actually works, I really love this double ended pen from Model Co. On one end a hydrating lipstick, on the other, a tooth whitening formula with a paint-on brush applicator. Apparantly, Star Smile gives 4 shades lighter in one week, and the lipstick shades available are really quite pretty. Although I am kind of over double ended things which always seem to be twice the trouble and half the product, I could be persuaded that Star Smile is really quite a genius idea. £28. www.hqhair.com
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