Common volumizing shampoos include Pantene Pro-V Full & Strong, Matrix Biolage Volumebloom, Kiehl’s Ultimate Thickening Shampoo, and Head & Shoulders Full & Thick. [2] X Research source

If your hair is very short or tends to get oily, skip conditioner altogether.

Try to get the shampoo only on your roots so you don’t need to condition again.

Massage the dry shampoo into your roots with your fingers and let it sit for a few minutes, then comb through to the ends of your hair. This will help absorb oil throughout the length of your hair, especially right at the roots where it builds up the most.

After you dry your roots, slowly move both the brush and hair dryer down each section of hair to dry it. If you have short hair, use a smaller round brush. Hold the brush at your roots instead of moving it through your hair to avoid adding too much curl. Flip your head upside-down and blow dry your hair without the brush until it’s about 70% dry, then turn upright to finish styling. For longer hair, you can play around with different round brushes and styling techniques.

After your hair has cooled, brush your hair back in the direction you normally part it.

This is a great method to air-dry your hair if you like to shower before bed at night.

If you use hot rollers, leave them in until they cool. If you use foam rollers or other rollers that aren’t heated, blast the roots of your hair with your blowdryer, then leave them in until your hair cools. Gently unroll your hair when it’s cool and style with your fingers.

When you get your hair to its desired volume, gently smooth the top layer of your hair over the teased section to hide it.

Make sure your hair is thick enough to cover the extensions. Clip-in extensions are usually placed fairly close to the roots, so even if your hair is on the thinner side, they wouldn’t be as noticeable. If you place them a few inches away from the roots, then thin hair may not fully hide them.

Comb your hair to the side if your hair is too short for a traditional part.

Fake a voluminous look on super-short hair by cutting the sides closer to your head and leaving the top a little longer. Style the top with a volumizing product and a round brush to give it lift.

Avoid blunt cuts that are done with a razor. These can cause your hair to look frizzy and can make it appear even thinner. [17] X Research source