I didn’t get to use this product, and won’t be buying any more of Adams. That’s unfortunate because a I love the products. Out of the 7 shipments I ordered, 6 came with leaking bottles, sprayers that had broken stems and caps that wouldn’t screw on. This full graphite kit I bought had a half filled bottle of graphene that leaked all over the box and it’s contents, due to a cheaply made bottle cap. I don’t know if this is due to poor quality bottles and caps, packaging or the change in altitude from Colorado to Connecticut? That said I love these products but until they ship me something that isn’t constantly leaking and has non broken sprayers with caps that actually work, I will go elsewhere. Fix your bottles please, your products are great, they should be in higher quality bottles.