IsaacBearDry/Resilientit is just a marketing term yaa, it really depends on how the company named their products. I do have watery ampoule and thick serum.110ZzoozooDry/Sensitiveusually ampoule is more concentrated than serum 😊 60elizabethDry/Sensitivei think ampoules have a smaller molecule than serum, so it penetrates deeper into the skin. I read it somewhere long time ago.. so im not 100% sure60MmeredoOily/Sensitivenice20HebskinOily/Sensitivefollowing! I’ve never used an ampoule other than when I’ve had nano/micro needling 201234