Is it allowed to use products such as shampoo, toothpaste, sunscreen, that have been tested on animals because of the cruelty animals go through during the testing?
Cruelty to animals is against the teachings of Islam. Those who do that are responsible. This does not mean that using any product is not allowed because the manufacturers did wrong as far as we don't support the wrong. There are two different issues in this question.
Wassalam.