There are a number of ways to camouflage limp locks. If you have a wide part and visible scalp, a simple root touch-up such as the can make hair appear fuller and add thickness to strands at the base. An alternative: use hair fibers. makes them in nine different shades and you can spray on to instantly fill in spots. Feeling adventurous? Try . “You have to be careful with which type, as some can be damaging and cause you to have less hair," says Yepez, who mentions her first choice would be a clip-in. “Jessica Gillin over at Serge Normant salon has a special way of putting in beaded wefts that has minimal damage. It’s not only her method, but the hair she uses is not as heavy and looks natural.” Or, you can always opt for a wig.
Source : https://www.allure.com/gallery/how-to-pump-up-fine-hair