View the full Bustle article here: https://www.bustle.com/p/is-walnut-scrub-really-bad-for-your-skin-heres-the-truth-behind-the-controversial-skin-care-product-17890468 On May 10, Kylie Jenner announced Kylie Skin, her new eponymous skincare line. However, only 24 hours later, the line was already causing...