Algenist Blue Algae Vitamin C Dark Spot Correcting Peel Algenist Blue Algae Vitamin C Dark Spot Correcting Peel ($85) gets its vitamin C from blue-green microalgae, and uses that ingredient (alongside a range of skin-clearing acids) to take on dark spots, and uneven skin texture and tone. Image Source: sephora.com Algenist Blue Algae Vitamin C Dark Spot Correcting Peel $85 from sephora.com Buy Now