Vital C Serum

Vital C Serum by Segle Clinical is formulated for normal, combination, dry, sensitive skin. Segle Clinical's vitamin C serum — and the reason Spanish pharmacists reach for this brand when customers ask for brightening. The formulation uses ethyl ascorbic acid (5%) instead of L-ascorbic acid, a deliberate choice: it's more stable (no oxidation within weeks of opening), penetrates well, and converts to active ascorbic acid in the skin. The supporting cast is smart — hyaluronic acid for hydration, panthenol for barrier support, and Chlorella vulgaris extract (the brand's signature marine plankton ingredient) as an anti-stress antioxidant. At ~$33 for 30ml, it undercuts comparable stable-C serums from international brands by 50–70%. The texture is genuinely light — a watery liquid that absorbs in seconds without residue, layering cleanly under sunscreen. Not the most potent vitamin C on the market (La Roche-Posay Pure Vitamin C10 or SkinCeuticals C E Ferulic deliver higher concentrations), but the stability advantage means you're actually getting the stated percentage throughout the bottle's life.

The key active ingredients in Vital C Serum are Hyaluronic Acid, Panthenol, Vitamin C. It's known for: ethyl ascorbic acid is more stable than L-ascorbic acid — no mid-bottle oxidation and Chlorella vulgaris plankton extract adds anti-stress antioxidant support.

Yes, Vital C Serum targets dullness, hyperpigmentation, fine lines. ethyl ascorbic acid is more stable than L-ascorbic acid — no mid-bottle oxidation

Vital C Serum retails for around $33, which places it in the mid range for serums. Check the "Where to Buy" section above for current retailer prices.

The main drawbacks to be aware of: 5% vitamin C concentration is moderate — not for aggressive brightening; no ferulic acid synergy (which SkinCeuticals leverages); minimal international availability — mostly Spanish pharmacies and Amazon ES.