Fragrance - they don't have to disclose what the fragrance is made of so it could be irritating.++
TV Highlights 3/19/24
Olivia Munn/Health
Layers! Start with the least watery (toner or essence), then moisturizing serums, then thicker++
Doctor Rogers Face Cream (the old formulation was thicker/better IMO) or Manyo Bifida Biome Cream