Parëva's C35.5 Serum Packs 30% Oil-Soluble Vitamin C Into a Waterless Formula

Most vitamin C serums sit somewhere between 10% and 20%. Parëva's C35.5 Firming Glow Serum goes much higher on paper: the brand says it contains 30% vitamin C in the form of tetrahexyldecyl ascorbate (THD ascorbate), an oil-soluble derivative, inside a mostly water-free base. The name refers to the 35.5% total of what Parëva calls bioactives.

Alongside the vitamin C, the formula lists resveratrol, turmeric extract and ceramides, plus a proprietary ingredient system the brand calls Molecur 3, which it describes as combining plant stem cells, exosomes and NAD+. That last part leans heavily on the current 'skin longevity' trend, and the brand gives no public breakdown of how much of each it uses, so it is best read as positioning rather than a measurable spec.

Why does the waterless base matter? Vitamin C, especially in water, tends to break down when exposed to air and light. Using an oil-soluble derivative in an anhydrous system is one common way formulators try to keep it stable for longer. A higher percentage of a derivative is also not directly comparable with the same percentage of pure L-ascorbic acid, because the skin has to convert derivatives before they act.

Parëva, founded by scientist and executive Smitha Rao, quotes results from its own testing: an 18% improvement in firmness, 97% of subjects with glowing skin and all subjects reporting softer, smoother texture. Sample size and study length are not given on the retailer page, so these remain brand claims.

The serum comes in 15 ml and 25 ml sizes and is listed at $74 on Credo Beauty, where it had a 4.89 out of 5 average from 70 reviews when we checked. The brand suggests one or two pumps on damp skin morning and night, followed by moisturiser. We did not find an Indian retailer or rupee price, so it is not part of our rankings.