Ask Dr. Schultz
Do I use Retinol at night or day?
Dr. Schultz,
Thanks so much for the videos and question / answer forum. I see from previous posts that AHAs and Vitamin C serums are compatible and won’t knock each other out (note, I’m using a sodium ascorbyl phosphate based solution). What I want to know is – should I be applying my Retinol in the morning in that case? My Retinol brand claims that it should be applied in the evening as UV light can kill the Retinol? Is this the case and if so – should I be time boxing when I apply the Retinol VS the AHA & Vit C in order to prevent de-activation of any of the above?