water-filters
20% Vitamin C + E Ferulic Acid Serum
This serum utilizes the gold-standard Duke parameters (L-Ascorbic Acid + Vitamin E + Ferulic Acid) at a highly effective 20% concentration. Its airless pump packaging is a significant technical advantage over competitors, as it protects the volatile L-AA from light and air oxidation.
Quality & Materials
Contains 20% L-Ascorbic Acid, the most biologically active form of Vitamin C. Formulated with Vitamin E and Ferulic Acid to stabilize the L-AA and double the photoprotective effect.
Evidence & Testing
Formulated based on the Pinnell research (Duke University) which established the specific ratio and pH requirements for topical Vitamin C absorption.
Brand Transparency
Timeless manufactures in small batches in the USA and provides a clear 'manufactured on' date on every box, which is critical for L-Ascorbic acid products.
Value Assessment
At under $30 for 1oz, it is the most cost-effective way to access high-potency, stable Vitamin C that actually penetrates the dermis.
Why Not Alternatives?
Unlike the industry leader (SkinCeuticals), Timeless uses an airless pump instead of a dropper bottle, which significantly extends the product's shelf life. It provides the same essential active profile for roughly 15% of the price without sacrificing pH stability (maintained at 2.4).
Sources & References
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