Why can’t I use The Neck Cream during the day? January 19, 2022 20:42 Updated The Neck Cream contains Tretinoin which should only be used at night. Related articles What are the possible side effects of The Neck Cream? How do I apply The Neck Cream? Do the dark spots come back if you stop using The Spot Cream? How long does it take to see results with The Neck Cream? What are the formulas for The Neck Cream?