Real ChatGPT answer · index seedOgs9zZzPBXYcompleteBeauty and personal care · skincarebrand

Are there newer peer-reviewed studies comparing The Ordinary niacinamide serum with higher-end barrier repair serums for treating persistent post-inflammatory hyperpigmentation?

ChatGPTgpt-63 queries11/1/2026
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The searches the AI actually ran for this prompt.

SEED QUERY
Are there newer peer-reviewed studies comparing The Ordinary niacinamide serum with higher-end barrier repair serums for treating persistent post-inflammatory hyperpigmentation?
3 real searches · 1 real-search pass
peer reviewed study niacinamide serum post-inflammatory hyperpigmentation barrier repair serum comparison The Ordinary niacinamide 10% zinc 1% clinical trialGoogle ↗
OBSERVEDComparison
niacinamide topical postinflammatory hyperpigmentation randomized controlled trial 2023 2024 2025 skin barrier ceramide serumGoogle ↗
OBSERVEDReason
barrier repair serum post-inflammatory hyperpigmentation clinical study niacinamide ceramide tranexamic acid comparative trialGoogle ↗
OBSERVEDComparison

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (3)
Short factOther / navigationalComparison67%ConsequenceReason33%DefinitionInstructionYes / no

Classes come from the query-classifier (a local Laya model). 1 of 3 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT3 real searches · gpt-6
peer reviewed study niacinamide serum post-inflammatory hyperpigmentation barrier repair serum comparison The Ordinary niacinamide 10% zinc 1% clinical trial Google ↗
niacinamide topical postinflammatory hyperpigmentation randomized controlled trial 2023 2024 2025 skin barrier ceramide serum Google ↗
barrier repair serum post-inflammatory hyperpigmentation clinical study niacinamide ceramide tranexamic acid comparative trial Google ↗
  1. Read the full peer-reviewed study · pmc.ncbi.nlm.nih.gov
  2. Treatment of Acne‐Induced Facial Post‐Inflammatory Hyperpigmentation With a New 2‐MNG‐Containing Routine Versus a Thiamidol‐Containing Routine—A Monocentric Prospective Double‐Blind Randomized Comparative Trial - Passeron - 2026 - Journal of Cosmetic Dermatology · onlinelibrary.wiley.com
  3. Read the study on PubMed · pubmed.ncbi.nlm.nih.gov
  4. Efficacy and Tolerability of a Topical Pigment-Correcting Serum in Melasma and Postinflammatory Hyperpigmentation - JDDonline · jddonline.com
  5. Efficacy of ceramides and niacinamide-containing moisturizer versus hydrophilic cream in combination with topical anti-acne treatment in mild to moderate acne vulgaris: A split face, double-blinded, randomized controlled trial. · pubmed.ncbi.nlm.nih.gov
  6. Efficacy of ceramides and niacinamide‐containing moisturizer versus hydrophilic cream in combination with topical anti‐acne treatment in mild to moderate acne vulgaris: A split face, double‐blinded, randomized controlled trial - Tempark - 2024 - Journal of Cosmetic Dermatology · onlinelibrary.wiley.com
  7. Read the full study · pmc.ncbi.nlm.nih.gov
  8. Evaluation of the Efficacy of a Serum Containing Niacinamide, Tranexamic Acid, Vitamin C, and Hydroxy Acid Compared to 4% Hydroquinone in the Management of Melasma - Rocio - 2025 - Journal of Cosmetic Dermatology · onlinelibrary.wiley.com
  9. Read the study · onlinelibrary.wiley.com
  10. An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide for the Prevention of Post-inflammatory Hyperpigmentation in Skin of Color | Dermatology and Therapy · link.springer.com
  11. An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide for the Prevention of Post-inflammatory Hyperpigmentation in Skin of Color · pmc.ncbi.nlm.nih.gov

Queries

3 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
peer reviewed study niacinamide serum post-inflammatory hyperpigmentation barrier repair serum comparison The Ordinary niacinamide 10% zinc 1% clinical trial
OBSERVED
Google ↗
AI Mode ↗
—Comparison——1x
of 1
niacinamide topical postinflammatory hyperpigmentation randomized controlled trial 2023 2024 2025 skin barrier ceramide serum
OBSERVED
Google ↗
AI Mode ↗
—Reason——1x
of 1
barrier repair serum post-inflammatory hyperpigmentation clinical study niacinamide ceramide tranexamic acid comparative trial
OBSERVED
Google ↗
AI Mode ↗
—Comparison——1x
of 1