“I have used Synergy for many years. Great product. I like the supportive informative emails about the produce & what is going on the the skin care sphere.
However, I do prefer your previous vit C serum, prior to Efficacy C ‘cream’.”
“Have been using synergie for 5 years. I absolutely swear by it however not happy with the change of the vit c now to effica C. I get no effect from effica C. And have been told they won't be making it . If anything I've gotten an out break.”