Noticeable results, would recommend.
I bought this for my partner after he experienced a slight amount of hair thinning. He has psoriasis so naturally his skin is sensitive to any new product he tires out.
Despite this, he absolutely loves the product and has continued to use it as part of his daily routine. I have noticed his hair becoming thicker and so has he... Even had a few people at work notice!
The only thing I will say is don't apply too much because it can make hair appear greasy if you're too serum-happy, haha. (I recommend half a pump if you're using it daily).