Niacinamide Bleaching My Chin Only

I’m so confused! I’ve used The Ordinary products which contained Niacinamide and Alpha Arbutin and I’ve had this happened before but only on the chin. I’ve switched products entirely which still contains small traces of both but mostly Niacinamide.

I’ve had this “Dalmatian chin” for a few months after stopping and it never really went back to normal and now it’s happening again which sucks cause I bought so many new products to help with hyperpigmentation, which I suffer from along with very oily skin. I don’t breakout often but any scratch or pimple will leave inflammation scarring and it will be there for months on end.

These two ingredients are touted as being great for pigmented skin but it seems like it’s attacking my pigment. The crazy part is that is only targets my chin and no where else and my skin every where else is actually clearing up.

I’ve been researching and have yet to see this be a problem for anyone else. I would also like to add that I’m not experiencing any irritation, redness, swelling or itchy either.