美国采购需求：自有品牌生发油，生发油供应商，护发油OEM，滋养发油，促进头发生长，生物素发油

I'm looking for a nourishing hair growth oil that promotes scalp health and enhances hair thickness and fullness. Ideally, it should contain natural ingredients that stimulate hair follicles and improve overall scalp condition. Please provide details on your available products that fit this description, including ingredient lists, packaging options, and pricing. Additionally, I would appreciate information on any testing or certifications your products have, as well as lead times for orders. Looking forward to your response!