I started using the serum to try and revive my receding hair line after two pregnancies and the hair loss after. I'm slowly starting to notice small hairs appearing after about 4 weeks of just applying the oil, but even more noticeable is the reduction in hair loss when I brush and / or wash my hair. I was used to ropes of hair falling out with each wash, now it's a few strands at most, and my hair is starting to feel a bit thicker. I'm surprised and really happy with the results, and will try the gummies and shampoo as well.