Vitamin C Serum Brighten + Tone safety rating

Vitamin C Serum Brighten + Tone safety rating | Greenlens

Raters split

Ingredient safety

A 58-point gap between the two loudest voices.

42Greenlens Precautionary ScreenIndependent

vs

100Greenlens Tolerance ScreenIndependent

050100

See why, ingredient by ingredient

All 2542 cleaner options, safest first We show the best 12, including the strongest on each axis.

Every rater, every axis

Ingredient safety

58 pts apart

Independent — not funded by the brands it rates. Auto-linked to this product, not yet human-reviewed. Checked this week. about this rater →
A government authority. Auto-linked to this product, not yet human-reviewed. Checked this week. about this rater →
Independent — not funded by the brands it rates. Auto-linked to this product, not yet human-reviewed. Checked this week. about this rater →
Independent — not funded by the brands it rates. Auto-linked to this product, not yet human-reviewed. Checked this week. about this rater →

Also screened, nothing found: ECHA SVHC Candidate List · IARC Monographs · California Proposition 65 · EU Harmonised Classification (CLP Annex VI) · US NTP Report on Carcinogens · Health Canada Ingredient Hotlist

Environmental

Also screened, nothing found: EU Microplastics Restriction

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

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composite recomputes live

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Ingredient safety1.0×

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

Good11 of 15 characterized

Our sources have reference data on 11 of 15 listed ingredients; 4 are uncharacterized in our data — a gap, not a clean bill.

Worth a look (2)

Ascorbic Acidfragrance · antioxidant · bufferingraters disagree
ANSES endocrine candidateflagged by 1 of 9 lists →
Fragrance

No flags in our sources (9)

No data in our sources (4)

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.

undeclared fragrance blendFragrance
- Fragrance: A blend the label does not itemize, so what is in it cannot be read from the ingredient list. EU Regulation (EC) 1223/2009 permits the collective term "parfum"; the SCCS Opinion on Fragrance Allergens (SCCS/1459/11) reviews the contact-allergy evidence for the substances it can contain.
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".
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.