Simia™ Original Vitamine C Serum Review
Simia's vitamin C serum promises brightening, anti-acne, and anti-aging results in an affordable 30 ml bottle — but how much of that holds up under scrutiny?
We tested the Simia™ Original Vitamine C Serum daily for six weeks on combination and sensitive skin types. This review covers ingredients, real-world performance, tolerance, and whether it’s worth buying.
- Brightening that works Most users see a noticeably more even complexion within a few weeks, helped by kojic acid alongside the vitamin C–E combination.
- Real vitamin C is lower than claimed Independent analysis puts ascorbic acid at 3–5%, not the marketed 20%. Set expectations accordingly.
- Purging is normal A short blemish flare-up in the first days of use is common and resolves within one to two weeks as the skin adjusts.
- Pair it with a retinol serum Vitamin C alone has limited effect on fine lines. Use this in the morning and Simia’s retinol serum at night for full anti-aging coverage.
- Use it up quickly Ascorbic acid degrades fast after opening. Once the formula turns orange, active vitamin C is largely ineffective.
How We Tested
We evaluated the Simia™ Original Vitamine C Serum over six weeks of daily morning use across two skin types: combination-oily and sensitive with occasional breakouts.
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Daily morning application
Applied to clean, dry skin before moisturiser and SPF, as directed, for the full six-week test period.
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Skin tone and pigmentation tracking
Before-and-after photography under consistent lighting every two weeks to assess evenness and dark spot fading.
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Tolerance monitoring
Tracked purging, redness, and irritation against a baseline, noting onset and resolution timings.
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Ingredient cross-check
Cross-referenced the formula against an independent cosmetic ingredient database to verify active concentrations and irritation potential.
Our Pick
Specifications
Pros & Cons
- Kojic acid and vitamin C–E combination visibly evens skin tone
- Allantoin supports skin barrier repair and reduces redness
- Humectants (trehalose, hyaluronic acid) provide hydration support
- Economical — a few drops per application make the bottle last 2–3 months
- Fragrance-free formula in a protective dark glass bottle with pipette
- No comedogenic ingredients — safe for acne-prone skin
- Independent analysis puts actual vitamin C at 3–5%, not the marketed 20%
- Ascorbic acid degrades quickly after opening — discard once the formula turns orange
- Initial purging phase: temporary blemish flare-up in the first days of use
- Limited anti-aging effect on fine lines — a retinol serum performs better for that
- Not suitable for extremely sensitive skin
Our Rating & Verdict
The Simia™ Original Vitamine C Serum delivers on brightening and pigmentation at a price that’s hard to argue with. The gap between the claimed 20% and the real 3–5% vitamin C is a transparency issue, but the formula — rounded out with kojic acid, allantoin, and niacinamide — performs well for most skin types. Use it in the morning, finish each bottle before it oxidises, and pair it with a retinol serum at night for the anti-aging results the label implies but this serum alone can’t fully deliver.
Does this serum really contain 20% vitamin C?
The label claims 20%, but independent ingredient analysis estimates the ascorbic acid concentration at 3–5%. That’s still an active dose for brightening and antioxidant protection, but not the clinical potency the marketing suggests.
Is purging normal when starting this serum?
Yes. A short blemish flare-up in the first days is a common adjustment response, particularly in acne-prone areas. It typically resolves within one to two weeks. Continue use unless you experience persistent irritation or redness.
How do I layer this in my routine?
Apply to clean, dry skin in the morning before your moisturiser and SPF. In the evening, use Simia’s retinol serum for complementary anti-aging and cell-renewal benefits.
How long does a 30 ml bottle last?
Most users find a 30 ml bottle lasts around two to three months with daily use, as only a few drops are needed per application.
Can I use this on sensitive skin?
The formula is suitable for most skin types but is not recommended for extremely sensitive skin. If you’re prone to reactions, patch-test first and start with every-other-day applications before building up to daily use.
Bottom line
- Effective brightening and pigmentation reduction for the price
- Best used alongside a retinol serum for complete anti-aging coverage
- Use each bottle before it oxidises — shelf life after opening is limited
The Simia™ Original Vitamine C Serum is a strong performer at its price point. It won’t replace a clinical-strength vitamin C serum for advanced anti-aging, but for brightening, pigmentation, and daily antioxidant protection it earns its place in a morning routine.