Obagi Brightening Duo: Professional-C Serum 20% Kit 42.5 ml

A two-piece Professional-C kit built around the 20% vitamin C serum, for dullness and uneven tone in skin already used to vitamin C. Ask us for the exact contents.

Apply the serum to clean, dry skin in the morning, before moisturiser and sunscreen. The 20% strength is not a starting point: dry or sensitive skin, or anyone new to vitamin C, should start on a lower strength. Stop if your skin stings for more than a minute or stays red.