CER-100 Collagen Coating Protein Ion Injection Hair Essence safety rating

CER-100 Collagen Coating Protein Ion Injection Hair Essence safety rating | Greenlens

Raters split

Ingredient safety

A 46-point gap between the two loudest voices.

42Greenlens Precautionary ScreenIndependent

88Greenlens Tolerance ScreenIndependent

050100

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All 1396 cleaner options, safest first We show the best 12, including the strongest on each axis.

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Ingredient safety

46 pts apart

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 →
A 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 →
A 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 →

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

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

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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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

Robust35 of 37 characterized

Our sources have reference data on 35 of 37 listed ingredients; 2 are uncharacterized in our data — a gap, not a clean bill.

Worth a look (6)

Fragranceundeclared fragrance blend

What these ingredient tags mean (5)

These describe what an ingredient is, not whether it is a problem. The stance marks above are the ratings; these are not.

commonly dryingAlcohol
- Alcohol: A fast-evaporating solvent that leaves a dry finish. International Chemical Safety Card ICSC 0044, Ethanol (anhydrous), prepared by an international group of experts for the ILO and WHO: "The substance defats the skin, which may cause dryness or cracking." Bommannan et al., as reported by Lachenmeier DW, "Safety evaluation of topical applications of ethanol on the skin and inside the oral cavity", J Occup Med Toxicol 2008;3:26, DOI 10.1186/1745-6673-3-26, open access, reference 82: "Bommannan et al. found in vivo in humans that ethanol enters the skin and removes measurable quantities of the lipid barrier material from the stratum corneum." Both describe stronger exposures than a cosmetic formula.
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.
rich occlusiveDimethicone
- Dimethicone: A silicone that forms a film on the surface of the skin without an oily feel. FDA OTC skin protectant monograph, 21 CFR 347.10(g), lists dimethicone as a skin protectant at 1 to 30%.
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".
soothingAvena Sativa Kernel Extract
- Avena Sativa Kernel Extract: One of the ingredients the FDA recognises by name as an over-the-counter skin protectant for irritation and itching. FDA OTC skin protectant monograph, 21 CFR 347.10(f): "Colloidal oatmeal, 0.007 percent minimum; 0.003 percent minimum in combination with mineral oil in accordance with 347.20(a)(4)."; section 347.50(b)(4) gives it the indication "temporarily protects and helps relieve minor skin irritation and itching due to:" followed by at least one of rashes, eczema, poison ivy/oak/sumac, or insect bites. The indication is conditional on naming a cause; the same opening phrase also serves sodium bicarbonate at (b)(5), so the phrase alone does not identify oatmeal.