Brightening C Serum
Brightening C Serum
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COSMOS
The golden drop that makes everything underneath it work harder.
Dark spots from shaving. Dull skin from pollution. Uneven tone from years of UV exposure you didn't think mattered. These are the problems men notice first and the ones most skincare products fail to address.
The Brightening C Serum uses 2% stabilised Vitamin C combined with Ferulic Acid a pairing that clinical research shows doubles Vitamin C's photoprotective capacity and prevents the oxidation that makes most Vitamin C serums useless within weeks of opening. Sea Buckthorn Oil adds a second layer of antioxidant defence while nourishing the skin.
Applied every morning before your SPF, it actively fades dark spots, brightens overall skin tone, and protects existing collagen from the free radical damage that causes premature ageing. One serum. Three functions. Every morning.
How to Use
Daily — Morning Only
Cleanse with Daily Control Cleanser pat dry, leave skin slightly damp.
Dispense 3–4 drops into your fingertips.
Press gently across face and neck, focusing on areas with dark spots or uneven tone.
Allow 30 seconds to absorb, then apply Deep Hydration Cream.
Always follow with Active Shield SPF50 Vitamin C and SPF work synergistically.
Key Ingredients
Vitamin C 2% (Stabilised)
Inhibits tyrosinase, the enzyme that drives melanin overproduction. Fades existing dark spots while preventing new ones from forming.
Ferulic Acid
Doubles Vitamin C's photoprotective capacity. Stabilises the formula to prevent oxidation — the reason most Vitamin C serums turn brown and stop working.
Sea Buckthorn Oil
One of the most antioxidant-dense plant oils available. Nourishes skin while reinforcing the UV defence that Vitamin C and Ferulic Acid provide.
Jojoba Seed Oil
Mimics the skin's natural sebum for rapid absorption. Delivers the serum's actives deep without greasiness or residue.
Full Ingredient List — INCI
Simmondsia Chinensis (Jojoba) Seed Oil*, Hippophae Rhamnoides (Sea Buckthorn) Fruit Oil*, Ascorbyl Palmitate (Vitamin C), Ferulic Acid, Tocopherol, Rosmarinus Officinalis (Rosemary) Leaf Extract.
*From organic farming · Vegan · COSMOS NATURAL certified by ECOCERT Greenlife
Questions
Why morning only — can't I use this at night?
Vitamin C's antioxidant protection is most valuable during the day when your skin faces UV and pollution. At night, switch to Peptide Anti-Aging Serum for collagen repair different actives for different jobs. Read the full breakdown in our Night vs Morning guide.
How do I know if my serum has oxidised?
Fresh Vitamin C serum is clear to pale gold. If it turns dark amber or brown, it's oxidised and should be replaced. The Ferulic Acid in this formula dramatically slows oxidation but store in a cool, dark place and use within 3 months of opening.
Is there a bundle for dark spots?
The Dark Spot Corrector pairs this serum with AHA Peeling Concentrate and Active Shield SPF50 Vitamin C fades, AHA removes, SPF prevents. The complete protocol.
How long until dark spots fade?
Brighter skin within 2–3 weeks. Visible dark spot fading at 6–8 weeks. Significant improvement at 12 weeks. Consistency and daily SPF are non-negotiable UV creates new spots faster than Vitamin C can fade old ones.
Brighten. Protect. Prevent.
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