美国采购需求：护肤配方，有效护肤产品，年轻肌肤配方，优质护肤配方，抗衰老配方，天然护肤产品

I'm interested in developing skin care products that incorporate either zinc sulfide or pyrithione zinc at a concentration of 1-2%. Specifically, I'm looking for a serum and/or spray formulation aimed at treating dry, flaky skin and rosacea. This is primarily a personal project, and I plan to sell initially at local farmer's markets, later expanding to online sales if there's demand. Currently, I'm using a zinc serum with silicones, but it's causing me acne, so I'm looking for something that's serum-based and possibly a spray without those ingredients.