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Thorough Beauty

Face Serums

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Reddit Analysis

Editorial Summary: Reddit users favor niacinamide for oil control, acne and brightening but report mixed reactions at higher concentrations; start low, patch test and avoid piling on actives. Lancôme Génifique is praised for radiance and texture but is expensive and can pill when layered. Vitamin C effectiveness depends on stable formulation and airtight packaging; tranexamic/azelaic acids and tretinoin are commonly recommended for stubborn pigmentation.

Recommendations:
  • Beginners or sensitive skin: try a lower‑strength niacinamide (around 5%) and introduce gradually; consider mixing a small amount into moisturizer if straight serum feels irritating.
  • Oily, acne‑prone skin: niacinamide serums (5–10%) and salicylic acid cleansers can help with oil control and breakouts, but monitor for flares or fungal‑acne triggers.
  • Pigmentation/PIH: consider tranexamic acid or azelaic acid serums, stable vitamin C formulas in airtight packaging, and combine with tretinoin or professional guidance for best results.
  • Dry or mature skin seeking radiance: hydrating serums (hyaluronic acid) and reputed radiance serums like advanced‑formula boosters can improve glow and barrier function; layer sparingly to avoid pilling.
  • If you react to one brand’s formula, try another brand or a lower concentration rather than assuming the whole ingredient class won’t work for you.
  • Value/convenience: sample or travel sizes are useful to test expensive serums before committing to full sizes.
  • Safety and authenticity: buy from official or authorised retailers, inspect seals and packaging, and return suspicious items immediately.
1
Lancôme Génifique (Multiple Variants)

Lancôme Génifique (Multiple Variants)

Score: 0.49

🟢 6 positive reviews
🟡 3 neutral reviews
🔴 1 negative review

2
The Ordinary Niacinamide 10% + Zinc 1%

The Ordinary Niacinamide 10% + Zinc 1%

Score: 0.34

🟢 12 positive reviews
🟡 9 neutral reviews
🔴 9 negative reviews

3
Minimalist Niacinamide Serum (5% or 10%)

Minimalist Niacinamide Serum (5% or 10%)

Score: 0.28

🟢 14 positive reviews
🟡 10 neutral reviews
🔴 18 negative reviews

4
Foxtale Rapid Spot Reduction Drops

Foxtale Rapid Spot Reduction Drops

Score: 0.23

🟢 3 positive reviews
🟡 1 neutral review
🔴 2 negative reviews

Asked by Redditors

Are niacinamide serums safe and what concentration should I start with?
Niacinamide is widely used for oil control, acne and brightening but some people react to higher strengths; start with ~5% and patch test before moving to 10% or higher.
I got irritation/bumpy texture after a serum — is that a purge or an allergy?
If redness, itching or persistent bumps appear quickly and worsen, it’s more likely irritation or allergy; stop the product, simplify your routine and consult a dermatologist if it doesn’t clear.
How should I layer serums like vitamin C, niacinamide and retinoids?
Use thinner, water‑based serums (vitamin C, niacinamide, tranexamic) first in the AM, finish with moisturizer and sunscreen; reserve retinoids for nighttime and avoid stacking multiple strong actives on the same night.
Do vitamin C serums go bad quickly and what packaging matters?
L‑ascorbic acid oxidizes with air and light — choose airtight, opaque or dark glass packaging and avoid fragranced formulas that can increase irritation.
What works best for pigmentation and dark spots?
Options with clinical backing mentioned by users include tranexamic acid serums, azelaic acid, stable vitamin C blends and combinations with tretinoin or chemical exfoliation; single serums often help but persistent pigmentation usually needs consistent multi‑step treatment and sun protection.
How often should I use chemical exfoliants like AHA/BHA or The Ordinary peeling solution?
Limit strong chemical peels to about twice weekly maximum unless advised otherwise by a professional, and never combine aggressive exfoliation with multiple other active treatments the same day.
How can I avoid counterfeit or poorly packaged serums?
Buy from authorized retailers or the brand’s official site, check for sealed packaging and batch codes, and return products that smell off or have unexpected packaging differences.

Application Tips by Redditors:

  • Patch test any new serum on the inner forearm or jawline for 24–48 hours before applying to your whole face.
  • Introduce active serums one at a time, start at low frequency (every other day), and increase only if no irritation appears.
  • Use vitamin C and niacinamide in the morning with sunscreen; reserve retinoids and strong peels for nighttime and avoid using multiple strong actives on the same day.

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