Drunk Elephant C Firma Fresh Day Serum vs SkinCeuticals C E Ferulic
SkinCeuticals C E Ferulic wins — SkinCeuticals C E Ferulic is the more documented 15% L-ascorbic acid serum: the 15/1/0
Scores: Drunk Elephant C Firma Fresh Day Serum 7/10 · SkinCeuticals C E Ferulic 8/10
SkinCeuticals C E Ferulic is the more documented 15% L-ascorbic acid serum: the 15/1/0.5 combination increased photoprotection 8-fold in Pinnell et al. (Journal of Investigative Dermatology) and is formulated at pH 2.5. Drunk Elephant C-Firma Fresh Day Serum uses the same 15% L-ascorbic acid headline at $80 vs $185 for 30 ml but has no equivalent peer-reviewed photoprotection study and is more ...
Drunk Elephant C Firma Fresh Day Serum lists at $80 while SkinCeuticals C E Ferulic lists at $185 — Drunk Elephant C Firma Fresh Day Serum undercuts SkinCeuticals C E Ferulic by $105 (131%).
Spec-by-spec comparison
| Drunk Elephant C Firma Fresh Day Serum | SkinCeuticals C E Ferulic |
|---|
| vitamin_c | 15% L-ascorbic acid | 15% L-ascorbic acid |
|---|
| antioxidant_complex | Vitamin E + ferulic acid + pumpkin ferment | 1% alpha-tocopherol + 0.5% ferulic acid |
|---|
| volume | 30 ml | 30 ml |
|---|
| ph | — | 2.5 |
|---|
Drunk Elephant C Firma Fresh Day Serum
What works
- $80 for 30 ml, $105 less than SkinCeuticals C E Ferulic at $185
- 15% L-ascorbic acid with vitamin E, ferulic acid, and pumpkin ferment in a pump bottle
- Citrus-pumpkin scent instead of the savory odor repeatedly flagged for C E Ferulic (per Byrdie, Allure)
What doesn't
- No peer-reviewed 8-fold photoprotection data comparable to Pinnell et al. on C E Ferulic (Journal of Investigative Dermatology)
- Opened bottles are widely reported to yellow/brown faster than the patented C E Ferulic formula (per Allure, Byrdie)
SkinCeuticals C E Ferulic
What works
- 15% L-ascorbic acid + 1% vitamin E + 0.5% ferulic acid increased photoprotection 8-fold (per Pinnell et al., Journal of Investigative Dermatology)
- pH 2.5, inside the ~2.0–3.5 window used for L-ascorbic acid absorption (per Healthline / dermatology literature)
- Most-cited topical vitamin C formula in dermatologist roundups (per Allure, Byrdie)
What doesn't
- $185 for 30 ml — more than 2× the $80 C-Firma bottle
- Savory/fermented odor and yellow staining on fabric are the most-cited daily complaints (per Byrdie, Allure)
Bottom line
Our pick: SkinCeuticals C E Ferulic.
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