kosas
Chemistry Deodorant BO-Fighting AHA Serum, Fragrance Free
Deodorant
Cleaner pick · Safest deodorant we have rated
Primally Pure
Geranium Deodorant+39 on ingredient safety
$16
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 60-point gap between the two loudest voices.
40Health Canada Ingredient HotlistGovernment
vs100Greenlens Precautionary ScreenIndependent
050100
See why, ingredient by ingredientAll 643 cleaner options, safest first We show the best 12, including the strongest on each axis.
Every rater, every axis
Ingredient safety
60 pts apartIndependent — 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 →
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 →
Also screened, nothing found: US NTP Report on Carcinogens · ECHA SVHC Candidate List · California Proposition 65 · EU Harmonised Classification (CLP Annex VI) · ANSES Endocrine Disruptors
Recognized on a safer-ingredients list: US EPA Safer Choice recognizes 71% of ingredients as safer choices — a marker, never a score.
Environmental
Also screened, nothing found: EU Microplastics Restriction
Coverage & match quality
5 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.
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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
Robust14 of 14 characterized
Our sources have reference data on all 14 listed ingredients.
Worth a look (6)
IARC possible carcinogen (Group 2B)flagged by 1 of 9 lists →
Health Canada Hotlist — restrictedflagged by 1 of 9 lists →
EU-restricted (with limits)flagged by 2 of 9 lists →
Health Canada Hotlist — restrictedflagged by 1 of 9 lists →
Health Canada Hotlist — restrictedflagged by 1 of 9 lists →
Health Canada Hotlist — restrictedflagged by 1 of 9 lists →
No flags in our sources (8)
What these ingredient tags mean (2)
These describe what an ingredient is, not whether it is a problem. The stance marks above are the ratings; these are not.
exfoliating acidLactic Acid
- Lactic Acid: An alpha hydroxy acid that loosens surface skin cells; it also makes skin more sun-sensitive while you use it. FDA, "Guidance for Industry: Labeling for Topically Applied Cosmetic Products Containing Alpha Hydroxy Acids as Ingredients" (announced at 70 FR 1721, 10 January 2005; FDA web pages title it "Labeling for Cosmetics Containing Alpha Hydroxy Acids"), which names this acid and recommends the statement "Sunburn Alert: This product contains an alpha hydroxy acid (AHA) that may increase your skin's sensitivity to the sun and particularly the possibility of sunburn."
humectantGlycerin, Hyaluronic Acid
- 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".
- Hyaluronic Acid: A humectant that holds a large amount of water at the skin surface. Chylińska N, Maciejczyk M, "Hyaluronic Acid and Skin: Its Role in Aging and Wound-Healing Processes", Gels 2025;11(4):281, DOI 10.3390/gels11040281, PMID 40277717, open access: hyaluronic acid's "high osmotic activity and anionic structure enable it to bind large amounts of water", and "sodium and potassium hyaluronate are widely used in moisturizing products". The same review notes that high-molecular-weight hyaluronic acid does not penetrate the deeper layers.