The combination of 15% L-Ascorbic Acid, 1% Vitamin E (alpha-tocopherol), and 0.5% ferulic acid is the gold standard in topical antioxidant protection. A seminal study from Duke University showed this triple combination increases photoprotection by eightfold compared to Vitamin C alone, and approximately doubles the protection offered by Vitamin C + Vitamin E without ferulic acid. This synergistic amplification is one of the most significant discoveries in applied cosmetic dermatology and underpins every serious CE Ferulic formulation.
The primary antioxidant and collagen-synthesis driver. Neutralises free radicals generated by UV exposure; inhibits tyrosinase; stimulates collagen synthesis. Works as a water-soluble antioxidant in the aqueous environment of skin cells.
A fat-soluble antioxidant that works in the lipid membrane environment — the cell wall — where Vitamin C cannot reach effectively. Neutralises lipid peroxidation chain reactions. When oxidised by a free radical (becoming tocopheroxyl radical), Vitamin C donates an electron to regenerate it, restoring its antioxidant activity. This regeneration cycle is what makes C + E more powerful than either alone.
A plant polyphenol antioxidant that donates electrons to regenerate both Vitamin C and Vitamin E after they have been oxidised in the process of neutralising free radicals. It also absorbs UV light in the UV-A/B range, adding a direct photoprotective mechanism. And critically, it stabilises L-Ascorbic Acid against oxidative degradation — extending the shelf life and efficacy window of the combined serum.
The Lin et al. study measured thymine dimer formation — a direct measure of UV-induced DNA damage — in pig skin treated with different antioxidant formulations, then exposed to UV radiation. Results:
This is not a marketing claim — it is a direct measurement of DNA damage prevention. The combination did not just add the effects of three antioxidants; it multiplied them through synergistic interactions.
Apply 3–5 drops to clean, dry skin every morning before moisturiser and SPF. Allow 60 seconds to absorb. This is one of the most evidence-backed investments in any morning routine — not a luxury add-on but a foundational antioxidant layer that measurably increases your skin's resistance to UV-induced ageing and damage throughout the day.
Important: this combination does not replace SPF. It dramatically augments SPF. Always apply after your CE Ferulic serum and before makeup.
The CE Ferulic triple combination is not just a good product category — it represents the most significant evidence-backed advance in topical antioxidant formulation. Eightfold photoprotection improvement is a genuinely extraordinary result. If you use L-Ascorbic Acid alone in the morning, adding 1% Vitamin E and 0.5% ferulic acid to your formula (or switching to a formula that combines all three) will measurably increase your protection against UV-induced skin ageing every single day you use it.