How many nights of each?

worth a try, skin cycling. 1. exfoliate 2. retinol 3-4. repair then repeat

Dermatologists recommend 1-2 days betw applications for new users; best to air on the side of caution. Remember the strength you start with will affect your results too. Also, be particularly careful with the under eye and neck areas. The skin there is much thinner and has a much lower threshold. Be mindful that this is a "PEA SIZE" amount product. Do not use this as a spot treatment if you have acne either. You will lose its all over benefits that way. And of course SPF and moisturizing are both givens. Best of luck to you!

once every night for each routine, but the repair days are twice. (two consecutive days)

following

any recos for skin barrier