The principles of Halal apply to every aspect of the life of Muslims and the use of personal care products is not an exception. The ingredients in Halal skincare and cosmetics must meet rigorous requirements. They must not contain any kind of alcohol or fat derived from pigs, for example. In fact, most ingredients of animal origin are not allowed. These include derivatives like L-cysteine, for instance. The products must be cruelty-free. This means that the manufacturing methods do not include experiments on animals.
It is quite challenging for consumers to check all the ingredients found in traditional skincare and cosmetic products simply because most of them are chemical compounds derived from natural sources or synthesized in labs. That is why the easiest way for Muslims to ensure that they will be applying Halal products on their face and body is to look for the Halal seal of approval.