Like most volumizing powders, this one will leave your hair feeling slightly tacky, but it’s super long-lasting and will keep your roots lifted for days. When I style the next day, my roots have an additional boost of volume and density for me to work with. While you can see the powder when it hits the hair, it becomes translucent once you massage it into the scalp. She also recommends Vitamin E "to protect the hair follicle from damage" and improve blood circulation in the scalp, sunflower oil, which contains Vitamin E and oleic acid and linoleic acid, fatty acids that are believed to help plump up fine strands. A cross between a mousse and a hairspray, this hybrid adds all over fullness and thickness, plus anti-frizz coverage.

Kari Williams, PhD, is a celebrity hairstylist and trichologist who owns Mahogany Hair Revolution, a natural hair salon based in Los Angeles, CA. Many of these formulas are also heat-activated, which will help lock in the volume for longer periods of time. Yup, I’m talking about the strong-hold hairsprays, oil-absorbing dry shampoos, curly hair mousses, and thickening sprays that give your fine hair the assistance it needs to be ~voluminous~ instead of flat and limp.Check out the rest of the VO5 Gel Sprays, Mousses and Hairsprays - featuring different hold levels to keep your hair in place as you need. From thickening the appearance of your strands to boosting texture and adding volume, volumising sprays are one of the most versatile styling products that you can have in your haircare arsenal. Instead, it harnesses a proprietary polymer and fortifying bamboo blend to surround each strand, creating volume while allowing your cuticles to remain closed and intact.

Apply this to damp hair before blow-drying for an ultra-glam, plumped-up style, and spritz it through dry hair to add targeted volume exactly where you need it. The Unite Hair Texturiza goes on dry hair after it's been styled," says Santiago, who uses this volumizer not only on clients but on herself.This texturizing mist is formulated with sea salt (hi, beach waves) and aloe vera (for moisture) plus a very ~luxe~ combo of lavender, rose, and citrus scents. For maximum volume, make sure to blow dry in different directions, then go in with your round brush to polish.

While there's a lot to be said for the efficacy of a great hair-thickening shampoo or conditioner, a lot of these science-led formulations take time to work.

This spray adds volume, texture, and shine—plus, it also works to remove excess sebum, similar to a traditional dry shampoo. It soaks up oil with silica, which adds the slightest bit of grit that will really help your hair look thicker.