SkinCeuticals

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4.2C E Ferulic
  • “This is the most studied vitamin C serum”14:50–14:54
  • “It does contain effective concentration 15% of pure vitamin C which is the active form vitamin C that does all the goodness for our skin acting as an antioxidant help to brighten the skin and support collagen synthesis”15:03–15:07
  • “Also contains 1% vitamin E that is a great antioxidant as well along with 0.5% ferulic acid so just trio of antioxidants that really help with improving skin texture skin tone antioxidant properties”15:15–15:20
  • “Great one to incorporate if you have the budget into your anti-aging regimen every morning”15:29–15:34
  • Source: Budget-friendly Korean skincare swaps - May 9, 2024
4C E Ferulic
1C E Ferulic
2Discoloration Defense
4.9Gentle Cream Cleanser
mentionsP-TIOX Anti-Wrinkle Serum
  • “The star ingredient in this serum is something that they call advanced peptide complex”14:36–14:39
  • “The hexapeptide is acetal hexapeptide 8. That's arurolene which we've seen in a lot less expensive products already and the deptide is depeptide daminobuteryl benzylomide diacetate which is s”14:45–14:50
  • “The main advantage of this serum though is clinical testing”15:12–15:18
  • “After 12 weeks of use, treated skin showed a 20% reduction in fine lines”15:31–15:36
  • “Whether that's worth $150 for 30 mls, that's your decision”15:58–16:07
  • “A 10 to 20% reduction in wrinkle size sounds like a lot, but when people are looking at you in person, not under a microscope, that's not as dramatic as you might think”16:04–16:09
  • Source: Do peptides actually work? Dermatologist reviews the proof - Jan 10, 2026
Brand note

SkinCeuticals is the brand dermatologists point to when they want to talk about clinically tested, patent-backed formulas — specifically around vitamin C and antioxidants. The C E Ferulic serum is the anchor here, and it's consistently described as the most studied vitamin C on the market, with a 15% concentration of pure ascorbic acid plus vitamin E and ferulic acid. But the praise comes with real friction: it's expensive, the packaging isn't airless, and at least one creator flags the 15% concentration as too strong for skin of color.

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