It was in 1944 when the test of Drez In which 0.5 ml or 0.5 g of the substance to be analyzed is applied to the rabbit’s eyes or shaved skin, left there for a specified time, washed and treated if the animal has any reaction. To check
Apart from the cruelty that this test implies, it is also classified as not completely accurate, speaking in scientific terms, not only because of the differences between animals and humans, but also because it is quite subjective. Because it is based on only one observational test. Which is to say that it is quite subjective.
This is why, although the test was expanded for several decades, years later it was banned United Kingdom In 1998 it was the first nation to ban both this testing on animals and any type of cosmetic testing. A decade later, exactly in 2013, this ban was implemented in Europe and since then all European cosmetic products must be banned. cruelty free.
Even China used to require cosmetic testing of products to be done on animals, now they have removed this requirement, but still animal testing continues in China and other countries. This is why alternatives such as artificial skin have been sought, although this is sometimes difficult to obtain, but the possibility of printing this skin with a 3D printer could be a solution to avoid reusing it with living beings. Can
The research was published in the journal Bioprinting and was carried out by Faculty of Pharmaceutical Sciences of the University of São Paulo (FCF-USP) n BrazilA country that has worked to end animal testing, so this contribution will be very valuable to make products for the cosmetic industry in this place cruelty free.
According to research, 3D-printed artificial skin can be as effective as artificial skin that is synthesized manually. One of the first steps for analysis is to verify that it has the same morphology as human skin in vivo, it has four layers: Basal layer, spinous, granular and horny.
Having a morphology similar to that of natural skin, it has the ability to protect against irritation from chemical products as well as physical stressors such as ultraviolet radiation. Thus becoming an effective method for testing cosmetics.
For now, researchers continue to conduct further studies on this 3D-printed skin, as using needles or conical cannulas for cell proliferation of artificial skin can yield altered responses that in some cases may interfere with cosmetics testing. Huh.
However, it is one of the most promising options for ending the use of cosmetic tests on animals.
