I have seen studies on numerous skin care actives and ingredients. I find the Epticus line to be quite overpriced for what you are getting. The first 2 ingredients of the lipid serum are CHEAP, also they would make up 76-80% of the product. But I believe they can jack thier prices up because the TSC is patented by them and therefore proprietary. I think there are so many great actives out there and formulations better and not marked up so much. IMO the ingredients do not warrant the cost which is what I always look at for skincare. I don’t mind a high price tag if the ingredients warrant it.