I have used this product for several months. I work in the sun so I would apply this in the morning every other day or so. Smells very nice by the way. Within a few weeks, I noticed nice highlights. When I went to get a hair cut the hair dresser asked me who had done my highlights. I told him "the sun." I did not apply the product in the winter and my hair grew about 3 inches (I have wringlets so it grows a bit slow) and it's the natural light brown color, so now I am using the Suntouched again. I am 54 years old and have a little bit of gray hair (been taking molasses and supplements for years and years and it does make a difference but the grey started showing a bit more) and didn't want to color my hair as I detest putting any chemical on my head or anywhere, so I researched what I could use and came up with Suntouched. I am now purchasing 2 more bottles. I've recommended it to friends. I am very happy with this product and if you want to go with something natural that actually works, then use it! Hope this helps you.