I love this stuff!! It is such a blessing!! So I'm in my mid-30s and have medium blonde hair. I started losing chunks of my hair and developing bald spots over the past couple of years due to malnutrition from some longterm health challenges. Anyhow, as I have been back on track trying to regrow my hair, I needed something to cover the bald spots in areas that had totally thinned out in the meantime. That's where GBG hair fibers came in!! I was impressed by many of the reviews and thought I would give it a shot. SO GLAD I DID! This stuff TOTALLY helps cover up all my balding areas (while the hair is slowly growing back in) and you can hardly even tell I don't have much hair on some parts of my head! lol - So I do love this stuff! Only reason why I gave it a 4 is because my dark blonde fibers color turned a gross organgey color after it interacted with dry shampoo (which tends to have a white residue). So now I am just careful to not use much dry shampoo in those areas. Other than that, love this stuff!! :)overing up my bald spots!