Ren Overnight Glow Dark Spot Sleeping Cream, 50 ml. Premature skin aging, pollution and sun exposure can lead to pigmentary abnormalities and age spots over time. The skin appears fatigued, dull and uneven. The REN Clean Skincare Overnight Glow Dark Spot Sleeping Cream is a rich moisturising cream that counteract pigmentation spots overnight and lend the skin an even tone and glow with regular use. The cream is specially formulated to target dark spots and brighten the skin tone. Results are visible after only 7 days of use.