I am an actual user of this product. I can tell you that it works. If you have any questions relating to its usage send me a message. 

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Sevich Hair Fibers: The main ingredient is Gossypium Plant Fiber (100% natural) and natural iron-based colorants. Because it contains no chemicals, it can be used on all skin types, including allergic skin. There is no irritation of the scalp skin. 

Natural look: I can confirm that it does look natural.  The new generation of fiber ingredients that are almost exactly like real hair.It can be used every day without being visible to the naked eye even at close range. 

Easy To Use: Shake Sevich's Hair Fibers directly into the thinning area of hair and gently shake. The hair fibers are seamlessly integrated into your existing hair, creating a completely natural dense and full appearance. I like to set it with hair spray but this is not necessary. 

 The main ingredients of SEVICH's hair fibers

The Fibers Main body: Gossypium Plant Fiber,
Natural iron-based colorants are used for coloring.
There will be no chemicals or paint.
Color matching is more precise, and the color is more natural.