The Inkey List Alpha Arbutin Brightening Serum The Inkey List Alpha Arbutin Brightening Serum (£10) takes on dark spots, scars, and hyperpigmentation while hydrating skin with squalane at the same time. Image Source: cultbeauty.co.uk The Inkey List Alpha Arbutin Brightening Serum £10 from cultbeauty.co.uk Buy Now