Extra Strength Biotin & Collagen Thickening Conditioner (2021 formulation) safety rating

Extra Strength Biotin & Collagen Thickening Conditioner (2021 formulation) safety rating | Greenlens

Raters split

Ingredient safety

A 63-point gap between the two loudest voices.

25Greenlens Precautionary ScreenIndependent

88Greenlens Tolerance ScreenIndependent

050100

See why, ingredient by ingredient

All 9182 cleaner options, safest first We show the best 12, including the strongest on each axis.

Every rater, every axis

Ingredient safety

63 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 →
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: ANSES Endocrine Disruptors · California Proposition 65 · ECHA SVHC Candidate List · US NTP Report on Carcinogens · EU Harmonised Classification (CLP Annex VI) · Health Canada Ingredient Hotlist · IARC Monographs

Environmental

Also screened, nothing found: EU Microplastics Restriction

Labor

Run by a nonprofit. Auto-linked to this product, not yet human-reviewed. This rates Renpure as a company and applies to everything they make, not this product alone. Checked this week. about this rater →

Coverage & match quality

4 ratings · 2 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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composite recomputes live

Ingredient safety1.0×

Environmentalno rating

No rater covers this axis for this product, so its weight can't move the score.

Labor1.0×

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

Good18 of 22 characterized

Our sources have reference data on 18 of 22 listed ingredients; 4 are uncharacterized in our data — a gap, not a clean bill.

Worth a look (4)

DIAZOLIDINYL UREAcommon irritant

Where this came from

Cruelty-free status recorded from crueltyfree.peta.org ↗

Researched facts on Greenlens always carry the page that stated them — nothing is inferred from a model's memory.

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.

common irritantDIAZOLIDINYL UREA
- DIAZOLIDINYL UREA: A preservative the FDA lists as a formaldehyde releaser, so formaldehyde-reactive skin can notice it. How much reaches the skin depends on the whole formula, not on this name alone. EU Regulation (EC) 1223/2009, Annex V entry 46, permits diazolidinyl urea as a preservative up to 0,5%. The FDA names it among the "formaldehyde and formaldehyde releasing ingredients" on its Allergens in Cosmetics page (content current 25 February 2022). Annex V preamble point 2, as amended by Commission Regulation (EU) 2022/1181, requires the warning "releases formaldehyde" on any product whose total released formaldehyde exceeds 0,001% (10 ppm). That Regulation states the sensitisation ground itself, so the chain is drawn by the regulator and not by us: recital (2) names the class, "Certain of those preservatives are gradually releasing formaldehyde in order to fulfil a preserving function in the final cosmetic product (so called formaldehyde releasers)", and recital (3) gives the purpose of the warning, "In order to inform consumers sensitised to formaldehyde about the presence of formaldehyde that may trigger an allergic reaction". Recital (1) records that formaldehyde is classified a skin sensitizer (Category 1) in Part 3 of Annex VI to Regulation (EC) 1272/2008.
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".