The causes of PN are many. I am not sure about beauty products, but MrsD may know. She is very knowledgeable about PN. I have it too, but it was do to surgery I believe. Do you have a good doctor that is treating you? Suppliments can help such as B12. Ask MrsD, she may have some insite. Also have you goolged up PN, keying in causes? I am here to listen anytime. ginnie