One Thing
Niacinamide Glutathione Serum
skincare50ml
Cleaner pick · Safest serums & essences we have rated
Africology Skincare & Spa
Aloe Ferox Serum+12 on ingredient safety
30ml · 569 ZAR · 1896.67 ZAR/100 ml
Ingredient safetyRaters agree
Ranked by safety only. Greenlens earns from qualifying purchases. Payout never affects a rating, a ranking, or the cleaner pick.
Raters split
Ingredient safety
A 20-point gap between the two loudest voices.
80ANSES Endocrine DisruptorsGovernment
vs100Greenlens Tolerance ScreenIndependent
050100
See why, ingredient by ingredientAll 1108 cleaner options, safest first We show the best 12, including the strongest on each axis.
Every rater, every axis
Ingredient safety
20 pts apartA government authority. Auto-linked to this product, not yet human-reviewed. Checked this week. We started showing this score on Sep 1, 2026. about this rater →
Independent — not funded by the brands it rates. Auto-linked to this product, not yet human-reviewed. Checked this week. We started showing this score on Sep 1, 2026. about this rater →
Independent — not funded by the brands it rates. Auto-linked to this product, not yet human-reviewed. Checked this week. We started showing this score on Sep 1, 2026. about this rater →
Independent — not funded by the brands it rates. Auto-linked to this product, not yet human-reviewed. Checked this week. We started showing this score on Sep 1, 2026. about this rater →
Also screened, nothing found: Health Canada Ingredient Hotlist · EU Harmonised Classification (CLP Annex VI) · US NTP Report on Carcinogens · IARC Monographs · California Proposition 65 · ECHA SVHC Candidate List
We started showing this clearance on Sep 1, 2026. We started showing this clearance on Sep 1, 2026. We started showing this clearance on Sep 1, 2026. We started showing this clearance on Sep 1, 2026. We started showing this clearance on Sep 1, 2026. We started showing this clearance on Sep 1, 2026.
Environmental
Also screened, nothing found: EU Microplastics Restriction
We started showing this clearance on Sep 1, 2026.
Coverage & match quality
4 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.
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
Robust26 of 30 characterized
Our sources have reference data on 26 of 30 listed ingredients; 4 are uncharacterized in our data — a gap, not a clean bill.
Worth a look (1)
ANSES endocrine candidateflagged by 1 of 9 lists →
No flags in our sources (25)
- Purified water
- propanediol
- butylene glycol
- glycerinhumectant
- niacinamidesoothing
- methylpropanediol
- methyl gluceth-20
- 1,2-hexanediol
- hydroxyacetophenone
- trehalose
- acrylates/C10-30 alkyl acrylate crosspolymer
- tromethaminefragrance material
- ethylhexylglycerin
- adenosine
- trisodium ethylenediamine disuccinate
- glutathione
- 3-O-ethyl ascorbic acid
- sodium ascorbyl phosphate
- tocopheryl acetate
- linoleic acidbarrier lipid
- oleic acid
- palmitic acid
- Stearic acid
- linolenic acid
- tocopherol
No data in our sources (4)
- glycereth-25 pcai isostearate
- coptis mimosa root extract
- citrus fruit peel extract
- tea tree leaf extract
Not a verdict — our authorities simply have no reference for these.
What these ingredient tags mean (3)
These describe what an ingredient is, not whether it is a problem. The stance marks above are the ratings; these are not.
humectantglycerin
- glycerin: A humectant, and one of the two ingredients a comparison of moisturiser components found made a significant difference to skin hydration. FDA OTC skin protectant monograph, 21 CFR 347.10(h), lists glycerin as a skin protectant at 20 to 45%. On the humectant half: Jeong CB, Han JY, Cho JC, Suh KD, Nam GW, "Analysis of electrical property changes of skin by oil-in-water emulsion components", Int J Cosmet Sci 2013;35(4):402-410, DOI 10.1111/ics.12059, PMID 23621673, found that "glycerine and urea showed significant skin hydration effects compared with other humectants".
barrier lipidlinoleic acid
- linoleic acid: An essential fatty acid the skin barrier uses and cannot make for itself. Khnykin D, Miner JH, Jahnsen F, "Role of fatty acid transporters in epidermis", Dermatoendocrinol 2011;3(2):53-61, DOI 10.4161/derm.3.2.14816, open access: "The human body can produce all but two of the fatty acids it needs: linoleic acid (C18:2, n6) and alpha-linolenic acid (C18:3, n3)", and replacing linoleic acid with a non-essential fatty acid "will lead to barrier defects". Feingold and Elias, J Lipid Res 2024: linoleate "is required for the synthesis of a subgroup of acylceramides".
soothingniacinamide
- niacinamide: A vitamin B3 form that supports the skin barrier and has anti-inflammatory activity; it turns up in products aimed at acne, rosacea and eczema. Camillo L, Zavattaro E, Savoia P, "Nicotinamide: A Multifaceted Molecule in Skin Health and Beyond", Medicina (Kaunas) 2025;61(2):254, DOI 10.3390/medicina61020254, PMID 40005371, open access: it "is extensively used in ... the treatment of dermatological conditions such as blistering diseases, atopic dermatitis, rosacea, and acne vulgaris", and contributes to reducing inflammation. On the acne evidence specifically: Liu H, Yu H, Xia J, Liu L, Liu GJ, Sang H, Peinemann F, "Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne", Cochrane Database Syst Rev 2020;5:CD011368, DOI 10.1002/14651858.CD011368.pub2, PMID 32356369, records "low-quality evidence" for every nicotinamide comparison it could pool, and none of its four nicotinamide studies measured the physician global assessment at all.