No Tears Test
It is possible to come across the phrase "Doesn't Burn" in shampoos produced specifically for babies or sensitive adults. Especially in products specially produced for babies, production is carried out by taking into account the sensitive skin and eyes of babies. Cosmetics or personal care products contain many chemicals. This can cause harm, especially to babies and people with sensitive structures.One of the analyzes carried out on products containing many chemical substances, such as cosmetics and personal care products, is for the "Does not burn eyes" claim. Although there are different methods used to prove the claim of No Tears, the method of determining the irritation potential by applying it to the chorioalantoic membrane of chicken eggs is also common.
With this method, vascular injury or coagulation that may occur in chicken eggs can provide us with information about the damage potential of the product.