Drunk Elephant C Firma Day Serum vs SkinCeuticals C E Ferulic

SkinCeuticals C E Ferulic wins — SkinCeuticals C E Ferulic leads with documented 8x photoprotection boost from ferulic acid (Allure)

Scores: Drunk Elephant C Firma Day Serum 7.5/10 · SkinCeuticals C E Ferulic 9/10

SkinCeuticals C E Ferulic leads with documented 8x photoprotection boost from ferulic acid (Allure). Drunk Elephant C-Firma provides comparable 15% L-ascorbic but lacks the same stability data from Byrdie tests. SkinCeuticals edges ahead on longevity and clinical backing while Drunk Elephant suits natural-ingredient preferences.

Spec-by-spec comparison

Drunk Elephant C Firma Day SerumSkinCeuticals C E Ferulic
Vitamin C Concentration15%15%
Key IngredientsL-ascorbic acid, pumpkin ferment extract, vitamin EL-ascorbic acid, vitamin E, ferulic acid
pH Level3.52.5-3.0
Bottle Size30 ml30 ml

Drunk Elephant C Firma Day Serum

What works

  • Contains pumpkin ferment for added antioxidants
  • Lightweight texture absorbs quickly
  • Includes vitamin E for synergy

What doesn't

  • Less stable formula than competitors
  • Shorter shelf life after opening

SkinCeuticals C E Ferulic

What works

  • Proven stability with ferulic acid
  • Clinically tested for photoaging reduction
  • Low pH for optimal absorption

What doesn't

  • Higher price point
  • Can cause tingling on sensitive skin

Bottom line

Our pick: SkinCeuticals C E Ferulic.

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