Can you use face oil for the Wanwentaoshi bracelet?

Personally, I suggest that walnuts should not be oiled (including face oil). Although it looks bright for a while after being dipped in oil, the walnut foundation will turn black after a long time, like two small briquettes, and there is no way to recover. Oiling is said to be an anti-cracking method for maintaining old walnuts, and most players don't need it. The way I play with my own dishes is to dry brush directly with a hard plastic toothbrush (the cheapest in the supermarket, or the hardest in the hotel can brush the bristles with bleeding gums).