this review title is: skeptical and the content is: ok sooo i don t know about this one clear vitamin c means it is potent but having an ingredient list that potency is no longer so upon seeing clear thick serum i was skeptical soon as i opened the bottle i added several drops to a small old bottle i own and left it open exposing to air lights and anything else that causes oxidizing to the vitamin c it stayed clear after one week straight no changes i even popped into the microwave for seconds still clear had it contained ferulic acid i would have been less skeptic because fa is a vitamin c stabilizer on its own vitamin c l absorbic acid is unstable and begins to oxidize once the seal is broken yes even pure vitamin c in water it will turn a slight yellow and begin to darkenbut my skin did not break out a good thing even if it doesn t contain vitamin c the other ingredients are a plus especially glycerin as the second ingredient which is a natural humectant anti microbial and antiviral all meaning moisturized skin that won t get clogged and controls acne i do get acne thank the skin gurus but i do chemical exfoliate with acids and use a retinol two things that cause dry skin if i should break out from a product then it is pure trash and the ph is way offso it has it pluses and minuses.there are other information for this review, one is this reviewer did purchase it and the other is 3 people think this review is helpful.