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Honored Contributor
Posts: 20,570
Registered: ‎06-13-2012

More questions for those that use the Dr. Gross ferulic and retinol brightening serum

Do you use it both in the am and pm like it says you can or just once a day? Do you use it every day or??

I already know what most believe about using retinol or retinoids during the day so I don't really want to get in a discussion about that. Just curious how everyone is using it.