Glow Recipe Guava Vitamin C Dark Spot Treatment Serum The Glow Recipe Guava Vitamin C Dark Spot Treatment Serum (£41) has guava extract and seed oil that is rich in vitamin C and other antioxidants. It also contains tranexamic acid, which is another ingredient great at diminishing dark spots and hyperpigmentation. The serum also uses five different forms of vitamin C that work throughout the day and night to brighten the skin, ferulic acid, vitamin E, and peptides. Image Source: cultbeauty.co.uk Glow Recipe Guava Vitamin C Dark Spot Treatment Serum £41 from cultbeauty.co.uk Buy Now