REN Clean Skincare Overnight Glow Dark Spot Sleeping Cream - 50ml. New and unopened. No returns. Overnight Glow Dark Spot Sleeping Cream from REN Clean Skincare is a targeted moisturiser that visibly reduces dark spots and hyperpigmentation while you sleep. The rich hydrating cream employs a multitude of powerhouse ingredients, including an encapsulated algae complex alongside a host of radiance-boosting botanicals and PhytoGlycogen – so you wake up to a plumper, more radiant and even-toned complexion