My client is concerned because she uses the app 'Yuka' and the Stratum products do not score well on the app.

My client is concerned because she uses the app 'Yuka', where she can scan products and they then tell her if it is a 'good' product or not.
Here, statum symbiosum® products do not score well just because of the phenoxylethanol.

If that one app is smarter than all reviewers combined consisting of toxicologists, dermatologists, pharma scientists, cosmetologists, nutritionists (after all, it is also in food) ... that would be very strange.
At the bottom of this text, you will find scientific information from our library on the safety of Phenoxyethanol. Found safe at a maximum concentration of 1%, we use 0.9% to safely concentrate the product. Your customer should also understand that every Nannic product has ±800 pages of safety reports
I understand that you are somewhat helpless in the face of this internet nonsense, but we are here to support you!
Please pass this on to your client and I would like to refute those things she does not agree with from the scientific study. After all, a generic APP compiled from random information from the internet can never replace an officially recognized committee of experts.

Regul Toxicol Pharmacol 2016 Dec:82:156. doi: 10.1016/j.yrtph.2016.11.007. Epub 2016 Nov 4
Opinion of the Scientific Committee on Consumer Safety (SCCS) - Final version of the opinion on Phenoxyethanol in cosmetic products
Scientific Committee on Consumer Safety (SCCS). Electronic address: SCCS@ec.europa.eu 1 ; Werner Lilienblum
Affiliations
PMID: 27825833 DOI: 10.1016/j.yrtph.2016.11.007
Abstract
The SCCS considers 2-phenoxyethanol safe for use as a preservative with a maximum concentration of 1.0%, taking into account the information provided. The toxicokinetics default factor of 4.0 can be reduced to 1.0 yielding a minimum Margin of Safety (MoS) of 25 instead of 100 for the safety assessment of 2-phenoxyethanol. Therefore, the MoS of about 50 for children also covers this specific age group who might be higher exposed to 2-phenoxyethanol than adults. This Opinion does not take into account exposure from sources other than cosmetics.
Keywords: CAS no. 122-99-6; EC no. 204-589-7; Phenoxyethanol; Regulation 1223/2009; SCCS; Scientific opinion.
Copyright Â© 2016 Elsevier Inc. All rights reserved.
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https://pubmed.ncbi.nlm.nih.gov/27825833/

Click hereand request the European commission's official document SCCS on Phenoxyethanol.