Thank you for your interest in the safety of the WEN® products. It is important to us that everything we provide is safe because we use these products ourselves, and so do our family, friends, and even our pets. We take this responsibility seriously. To ensure we’re upholding the highest standards, we tasked world-class toxicologists and dermatologists to evaluate everything from our ingredients to our manufacturing facilities.
WEN By Chaz Dean® (“Wen”) has and is continuing to do everything it can to ensure product safety is always maintained. Since their inception, Wen products have been tested through Human Repeat Insult Patch Tests (“RIPTs”). RIPT is a standard test to determine the safety of cosmetic products. To date, the Wen products have been tested on over 2,700 people without any adverse reactions.
The Assessment Wen undertook is likely the most comprehensive safety assessment ever performed on a cosmetic product. This assessment was done to evaluate the potential for any adverse effects, including the potential for hair loss, associated with the use of the WEN products.
Many of these tests have been published as articles in peer-reviewed literature or peer-reviewed presentations at the Society of Toxicology. The articles and presentations have been reviewed and approved by numerous impartial experts who validate the methodology and findings.
Below you’ll find detailed information about how we keep our promise of bringing the best to you. As always, we’d be happy to hear from you about how we could be doing better at firstname.lastname@example.org.Scientific Assessments
- TEST: A clinical assessment of all ingredients used in WEN products to identify any ingredient that could potentially cause an adverse reaction.
- TEST: A comparison of the ingredients found in WEN with the ingredients of other like-minded cosmetic products on the market (An express guide the FDA states can be used to determine the safety of cosmetics).
- TEST: A test to determine if any ingredient identified as a potential dermal sensitizer or irritant in the above assessment could cause an adverse event.
- TEST: A test to find out if endotoxins, which can lead to adverse dermal events, were found in randomly selected WEN batches.
- TEST: A test to determine if WEN products change under extreme temperatures. Products were heated to 450 degrees Fahrenheit (the temperature of common hair devices like flat irons).
- TEST: A test to determine if any adverse event is expected after exposure to sunlight when using WEN products.
- TEST: A test to determine if WEN products were absorbed directly into the blood stream, an immune response (e.g., alopecia) or an adverse dermal event would occur.
- TEST: An irritation test to see if undiluted WEN applied directly to skin cells to see if any adverse reaction would result from exposure.
- TEST: A sensitization test in which peptides were exposed to WEN products.
- TEST: A board-certified dermatologist conducted a literature review of all the ingredients used in WEN products.
- TEST: A board-certified dermatologist performed a 5-week 200-person in-use contact dermatitis study to see if WEN products caused contact dermatitis.
- TEST: Our scientific team reviewed and analyzed information submitted by over 400 adults complaining of hair loss.
- TEST: An analysis of chronological trends in the complaints about, to see if certain dates of specific media events and litigation-related dates caused an increase in hair loss complaints.
- TEST: A scientific review of documentation relating to batches of WEN products for the past several years.
- TEST: The scientific team reviewed documentation for all the constituent ingredients in WEN products.
- TEST: The scientific team visited the manufacturing facility of the WEN products distributed by WEN by Chaz Dean.
- 01 - Screening-level Toxiciological Hazard Assessment.pdfDownload
- 02 - Dermal Irritation Assessment of Ingredients.pdfDownload
- 03 - Survey of Constitutents In Consumer and Personal Care.pdfDownload
- 04 - Kathon CG Skin Sensitization Quantitative Risk Assessment.pdfDownload
- 04 - Survey of Constitutents In Consumer and Personal Care--Appendix A.pdfDownload
- 05 - Survey of Constitutents In Consumer and Personal Care--Table 2.pdfDownload
- 06 - Skin Sensitization Induction Risk Assessment.pdfDownload
- 07 - Quantitative Risk Assessment of Skin Sensitization Induction from Fragrances Exposure.pdfDownload
- 08 - Preliminary In Silico Skin Irritation and Sensitization Assessment.pdfDownload
- 09 - In Chemico Skin Sensitization Study-Panthenol.pdfDownload
- 10 - In Chemico Skin Sensitization Study-Kathon CG.pdfDownload
- 11 - In Chemico Skin Sensitization Study-Stearamidopropyl Dimethylamine.pdfDownload
- 12 - In Vitro Irritation Study.pdfDownload
- 13 - Endotoxin Testing of WEN Cleansing Conditioners.pdfDownload
- 14 - Heat Stress Degradation Of WCD Sweet Almond Mint Cleansing.pdfDownload
- 15 - In Vitro Phototoxicity Study.pdfDownload
- 16 - In Vitro Human Assay For Evaluating Immunogenic and Sensitization Potential Of WCD Products.pdfDownload
- 17 - Quantitative Assessment Of Asbestos Fibers In WCD Cleansing Conditioners.pdfDownload
- 18 - Survey and Quantitative Risk Assessment Of PFAS Chemicals in Shampoo and Conditioner Products.pdfDownload
- 19 - Wen Hair Breakage Analysis.pdfDownload
- 20 - Analysis Of Complainants Submissions In Mass Actions Alleging Hair Loss As A Result Of Use Of The Wen Cleansing Conditioner Products.pdfDownload
- 21 - Halo-Effect Analysis on Aderve Event Reporting Of WCD Products.pdfDownload
- 22 - Allergenic Potential Report.pdfDownload
- 23 - Allergic Contact Dermatitis Clinical Trial Report.pdfDownload