ForumsThe RegimenThe RegimenCan I do regimen on... Notifications Clear all Can I do regimen only at night?al 20 MemberMember0(@al20) Posted : 12/22/2018 8:35 am Can I do the regimen at night only and use Kiehls products in the morning with mederma for scars? will it affect the regimen in a bad way?Thanks Quoteklessard MemberMember46(@klessard) Posted : 12/24/2018 2:24 pm If it suggests twice a day, I would use twice a day (even if it is a pain in the butt). You'll get the best results that way. Quote