Dr. Zenovia
Niacinamide Correcting Serum
uncategorized
Every rater, every axis
Ingredient safety
Raters agree- 100
- 100
Coverage & match quality
2 ratings · 1 of 4 axes
- Some ratings rest on an automatic match that has not been human-reviewed.
- Fewer raters reach smaller-brand products, so a missing rating is not a clean bill of health, only a gap.
no black box
How this score is built
no black box
How this score is built
We don't rate products ourselves. We collect what each public rater already says, put every scale on common ground, and keep the disagreements visible instead of averaging them away.
- 1
Collect each rater's own score
Every source keeps its native verdict for this product. We never invent a score for an axis a source didn't measure.
- 2
Normalize to 0–100, higher = better
Raters can use different scales and directions: some where a low number means safe, some where a high one does. We map them all onto one 0–100 axis and flip the ones that run backwards so the numbers are finally comparable.
- 3
Average per axis, but keep the spread
Scores on the same axis become one representative number (their mean). When raters split by 20+ points we flag it and keep every rater's number. A disagreement is never blended into silence.
- 4
Your weights make the overall
The ring is the weighted average of the four pillars using your weights. It's computed fresh every time and never stored, so there's no hidden “objective” default.
worked example · Ingredient safety
- Greenlens Ingredient Scan100 on 0–100100
- Greenlens Tolerance Screen100 on 0–100100
Average of 100 · 100pillar100
Why the safety score
Greenlens Ingredient Scan
Independent · EU regulatory reference
100/100
No EU-regulated hazards recognized among 25 ingredients.
Starts at 100; 25 other ingredients carried no recognized regulated hazard. Absence of a flag means no regulated hazard was recognized — not proof of safety. This is one lens; see where raters disagree above.
Why this score
Every ingredient, under all three lenses
The Scan is one opinion. The strict and lenient lenses read the same list and land 2 points apart. See what each one flags, and what it costs.
Weighted by what you care about
Tune your weights
composite recomputes live
+
1.0×
Environmentalno rating
No rater covers this axis for this product, so its weight can't move the score.
Laborno rating
No rater covers this axis for this product, so its weight can't move the score.
Packagingno rating
No rater covers this axis for this product, so its weight can't move the score.
0 means ignored. Higher = more weight in your composite.
Ingredients, decoded
Data availability
Good20 of 25 characterized
Our sources have reference data on 20 of 25 listed ingredients; 5 are uncharacterized in our data — a gap, not a clean bill.
| Ingredient | What it does | Safety | Data |
|---|---|---|---|
| Purified Water | Not in our sources | No data | |
| Pentylene Glycolskin conditioningsolvent | skin conditioningsolvent | No flags in our sources | Well-characterized |
| Niacinamidesmoothing | smoothing | No flags in our sources | Well-characterized |
| Hexanoyl Dipeptide-3 Norleucine Acetateskin conditioning | skin conditioning | No flags in our sources | CosIng-catalogued |
| Palmitoyl Tripeptide-28skin conditioning | skin conditioning | No flags in our sources | CosIng-catalogued |
| Allantoinsoothingskin conditioningskin protecting | soothingskin conditioningskin protecting | No flags in our sources | Well-characterized |
| Acetyl Glucosamineskin conditioning | skin conditioning | No flags in our sources | CosIng-catalogued |
| Camellia Sinensis Leaf Polyphenols | Not in our sources | No data | |
| Ascorbyl Glucosideantioxidant | antioxidant | No flags in our sources | CosIng-catalogued |
| Alpha-Arbutinantioxidantbleachingskin conditioning | antioxidantbleachingskin conditioning | No flags in our sources | CosIng-catalogued |
| Arctostaphylos Uva Ursi Extract | Not in our sources | No data | |
| Glycyrrhiza Glabra Root Extractperfumingemollientbleaching | perfumingemollientbleaching | No flags in our sources | Well-characterized |
| Plankton Extractskin conditioning | skin conditioning | No flags in our sources | CosIng-catalogued |
| Morus Alba Bark Extractskin conditioning | skin conditioning | No flags in our sources | CosIng-catalogued |
| Glycerinperfuminghumectantdenaturant | perfuminghumectantdenaturant | No flags in our sources | Well-characterized |
| Sclerotium Gumemulsion stabilisingskin conditioningviscosity controlling | emulsion stabilisingskin conditioningviscosity controlling | No flags in our sources | Well-characterized |
| Sodium Phytatechelatingoral care | chelatingoral care | No flags in our sources | Well-characterized |
| Pullulanfilm formingbinding | film formingbinding | No flags in our sources | CosIng-catalogued |
| Xanthan Gumbindingemulsion stabilisinggel forming | bindingemulsion stabilisinggel forming | No flags in our sources | Well-characterized |
| Lecithinemollientantistaticsurfactant - emulsifying | emollientantistaticsurfactant - emulsifying | No flags in our sources | Well-characterized |
| Citric Acidfragrancechelatingbuffering | fragrancechelatingbuffering | Health Canada Hotlist — restricted· flagged by 1 of 9raters disagree | Referenced |
| Polysorbate 20surfactant - cleansingsurfactant - emulsifying | surfactant - cleansingsurfactant - emulsifying | No flags in our sources | Well-characterized |
| Ethylhexylgycerin | Not in our sources | No data | |
| Phenoxyethanolpreservativeantimicrobial | preservativeantimicrobial | Mild sensitizer for some· flagged by 1 of 9raters disagree | Referenced |
| Niacinamide Correcting Serum | Not in our sources | No data |