The Inkey List Tranexamic Acid Hyperpigmentation Treatment The Inkey List Tranexamic Acid Hyperpigmentation Treatment (£15) takes on dark spots overnight thanks to potent brightening ingredients like tranexamic acid, açai berry, and a vitamin C derivative. Image Source: cultbeauty.co.uk The Inkey List Tranexamic Acid Hyperpigmentation Treatment £15 from cultbeauty.co.uk Buy Now