I bought this because I was sick of L-ascorbic acid making my cheeks feel like I’d slapped on hot sauce. Prequel uses a different vitamin C derivative (tetrahexyldecyl ascorbate) that actually penetrates deeper without the burn.
The real test? I have a patch of melasma on my left temple that’s survived three different dermatologist peels. This serum didn’t erase it in a week — but it stopped it from getting darker during summer. That’s a win.
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🧴 **What’s In The Tube**
It’s a $22 serum that feels more like a lightweight emulsion. The claim that hooked me: “brightens stubborn melanin clusters without irritation.”
1. **THD Ascorbate** — Oil-soluble vitamin C that sinks in fast. No water-based instability drama.
2. **Kojic Acid** — The OG melanin blocker. Less famous than vitamin C, but arguably better for melasma.
3. **Niacinamide (4%)** — Calms the redness that melasma-prone skin always seems to have.
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✨ **Ingredient Hits**
The formula is smart. They skipped the flashy-but-useless extracts and went straight for the clinical heavy hitters.
- Tetrahexyldecyl Ascorbate: Fat-soluble vitamin C that actually reaches deeper skin layers
- Kojic Acid: Blocks tyrosinase (the enzyme that makes melanin) without bleaching
- Tranexamic Acid: Anti-inflammatory that targets hormonal pigmentation specifically
- Niacinamide: Strengthens barrier so you don’t get the ‘vitamin C rash’
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📊 **Texture & Timeline**
It’s a clear, slightly viscous gel that disappears in about 12 seconds. No white cast. No sticky film that pills under sunscreen. Smells like… nothing. Which I prefer — scented brightening serums are a red flag.
Two weeks in, my melasma patch looked less like a sharp border and more like a faded watercolor stain. Not gone. But visibly softer. Unexpected win: my forehead texture smoothed out. Didn’t see that coming from a brightening serum.
💡 **One Thing** — Apply it to *damp* skin. Dry application made it pill slightly. Damp skin = zero issues.
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💡 **Verdict Cards**
If you have melasma *and* reactive skin (the worst combo), this is your safest entry point into vitamin C. It won’t transform you overnight, but it won’t destroy your barrier either.
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🗓️ **Final Call**
It’s the most gentle effective melasma option I’ve used. Not magic. But reliable — which is honestly better.
💡 **One Thing** — Buy directly from Prequel’s site. Amazon has fakes floating around.