Benefits of Vitamin C for Skin.
Taken together, human clinical studies and lab-bench experiments show topical vitamin C in the form of skin care is a powerhouse ingredient for healthy skin.
Evidence shows vitamin C can lessen skin damage arising from UV exposure, which is why it's a great addition to a morning routine under sunscreen.
Vitamin C doesn’t act as a UV filter, but instead can reduce UV-induced issues such as redness, signs of sun damage (such as pigmentation and collagen loss), inflammation and immunosuppression, when used in the correct formulation.**
SkinCeuticals C E Ferulic - What Makes It So Good (and Expensive)?
When we're talking about vitamin C serums, the majority of evidence supporting the skin benefits of topical vitamin C comprises studies performed with L-ascorbic acid.
Specifically, L-ascorbic acid applied topically in at least a 10 per cent concentration, and at a pH below 3.5, which ensures the ingredient can penetrate past the skin surface.^
But, the thing about L-ascorbic acid is, even thought it's the gold standard of vitamin C, it's notoriously tricky to formulate (as are other vitamin C derivatives) because in aqueous solutions, it oxidises soon after opening.
This is the reason the SkinCeuticals C E Ferulic Serum formulation is superior, and why it’s worth the price tag!
In C E Ferulic, the brand has developed a stable formulation that contains 15 per cent L-ascorbic acid at pH 3.2. Plus, it includes other synergistic antioxidants (ferulic acid and vitamin E) that enhance vitamin C’s photoprotective abilities in the skin.^^
What about all the other vitamin C serums containing different vitamin C derivatives?
Yes, these vitamin C derivatives are more shelf-stable (meaning they're easier and less expensive to formulate), but they also need to be converted to active L-ascorbic acid in the skin. And there's less convincing evidence around the conversion of vitamin C derivatives to L-ascorbic acid, skin penetration, and/or antioxidant ability when compared to the body of evidence supporting topical L-ascorbic acid itself.
How to Use SkinCeuticals C E Ferulic Serum in Your Routine.
An L-ascorbic acid vitamin C serum like SkinCeuticals C E Ferulic Serum isn’t a miracle worker on its own, but it is a great addition to any routine focused on future-proofing, prevention and skin brightening.
A few drops spread onto clean, damp skin in the morning under sunscreen is all you need to add vitamin C’s benefits to your routine.
Repeat: Just a few drops, because this stuff is expensive liquid gold.