Not all hair fibers, thickeners, concealers alike: They are made with various materials and techniques with one common goal to achieve better hair coverage and give you a great looking hair.Toppik is probably the most used and known brand, Toppik is known to be made of wool (sheep hair) wool can be irritating especially in the summer time, I personally used Toppik and I used to go crazy not understanding why my scalp is so itchy until I found out it was made of wool. There are quiet few brands out there…I have tried them all and so my friends. Some were too dark or light but the major problem with most hair fiber brands was the size and weight of the fibers: Remember, we need the fibers to hold on to our own hair longer and better, it should also cover our scalp somehow to create an illusion of full dark hair. Some brand fibers were too heavy and could not cling to the hair for long time simply sliding down on your scalp to your forehead, neck and behind your ears. Some hair fibers were too light and stayed on top of your hair “bulk up” and did not penetrate deeper and the more you tried to add hair fibers it looked worse.Other brands were made of materials that did not blend into the natural hair color and feel and in certain light you could tell the obvious difference.™ and other brands mentioned here and/or their respective companies and brands. Our products may be comparable in content, quality and use, but are not the brand names mentioned above