What is the best serum for thicker, fuller hair?

There are a variety of hair serum products designed to increase the hair's thickness, including products from noted companies like Viviscal and L'Oréal. These companies offer products that are designed to improve the health of the scalp and give the hair a fuller look.

Many of these available products, such as Vivisca's "Hair and Scalp Serum" use complex formulas that contain natural ingredients, like pea sprouts and grape seeds, to invigorate the hair and infuse it with anti-aging nutrients. Another company called Thicker Fuller Hair offers a full product line of shampoos, conditioners, hairsprays and serums - all designed to improve scalp health and give the hair more fullness and thickness.