I can vouch for this. But I was doing this just once a day. I am 53YO. Already I had handful grey hair in the front. But after doing this, it started reducing. Initially I thought it was my illusion, but my husband started asking “did u dye your hair recently “. I refer to my old selfies with new ones. Then I realized that this trick is really working. In addition, my hair is growing longer also. I thank you this lady. Folks, anyone interested can keep trying this. And now I am going to do twice a day.