What is the Non-drying / Transepidermal Water Loss Test and why it is important?
To understand what Non-drying / Transepidermal Water Loss Test is, it is important to know what Transepidermal Water Loss is. Transepidermal Water Loss is usually a natural process that the body loses water through the skin. The Transepidermal Water Loss may cause a variety of dry skin conditions if the actions are not taken to replenish the water loss. There are a few reasons why Transepidermal Water Loss occurs. It could occur due to injuries or low-humidity weather conditions. Another reason is caused because of topically applied products.
Non-drying / Transepidermal Water Loss Test is designed to test whether a skincare or cosmetic product is causing Transepidermal Water Loss that is leading to dry skin conditions or not. This test is conducted by selecting volunteers who represent the target customers of the products and have them tested the products for a period of time. The numbers of volunteers and the period of test can be customized. The testing of a scar improvement test is conducted with international standard modern equipment. A signed informed consent is obtained before the volunteers are admitted to participate in the trial.
The test will be closely observed and monitored by experienced and accredited clinical evaluators or professionals. The findings during the testing period will be recorded in photographs. The efficacy and performance of the tested product will be evaluated and determined after the end of the test period. The findings of the product analysis and performance will be detailed in a report.
Some of efficacy performance tests such as Whitening / Lightening / Brightening, Depigmentation, Anti-wrinkles, Firming, Moisturizing, Non-comedogenic / Non-acnegenic, Scar Improvement, Non-drying/Transepidermal water loss (TEWL), and Sebum-Control can be conducted as a bundle or individually.