I've used this product over the course of several weeks, and I've never noticed a difference. I'm disappointed with this product as I frequently style my hair with heat and wanted something that would offer better protection to avoid damage. This product has an off-putting smell, a strange stickiness that makes touching your hair unpleasant, and I honestly can't say that this has protected my hair in any way. It still looks and feels the same. I feel like I wasted my money.