Toilet paper shortages became news at the start of the COVID-19 pandemic, when people decided to hoard this item in anticipation of prolonged lockdowns. In this opportunity the situation is different, but the outcome may be similar.
The manufacturing of toilet paper is heavily reliant on natural gas. AS there is a decline in the available natural gas due to the sanctions imposed on Russia, there could be a decreased supply of toilet paper. There is, of course, the high probability that people, once they receive the information about the shortage, decide to hoard again. In this case the shortage would be even worse
For further information, read this article