I did a great deal of research into different fibres before deciding on Hair Guru London. I started losing my hair in my 30's and have been fortunate enough to turn back time by affording Harley Street hair transplants. Twenty years have passed since my first surgery (I have needed three so far) and yet again my hair is thinning. Rather than go under the knife again, I decided to look at fibres. I ordered fibres, the pump and the spray together, and purchased a hairline comb separately. Once I worked out how to attach the pump to the container (it is not obvious), and started to use the fibres after each hair wash, the result has been miraculous. The first day I went out, I was amazed at myself in shop windows, sporting the fullest head of hair I have had for years. I looked 10 years or more younger, and that is reason alone to do this. I wash my hair every few days. One application after washing stays in for several days. They do not come off on your pillow or clothing and are totally undetectable. I even stare hard in the mirror to see them and I can't tell, so you don't need to worry about them being visible. This is the future of hair styling and anyone with thinning hair should be using them. I would qualify this by emphasising that if you have large areas of baldness they won't help, because they need existing hair to attach to. If you are well on the way to going bald they will only help for a while, but for me they work, because of the transplants. Also, if you are worried about chemicals or allergies, these are natural, which makes them better than some of the competitors. I tend to be allergic to everything, and I have zero reaction to these fibres. Dare to get them - you will not be disappointed.