I have always been a fan of the Bumble and Bumble products. For some reason they have all really worked well for me, so when my usual thickening serum really wasn’t doing the trick anymore it was only naturally for me to choose the Bumble and Bumble Really Thickening Serum ($27). This nightly leave-in treatment will help thicken your hair up to 8 percent over time. Not only will it add body, but it will also leave your hair stronger. The almost liquid formula is composed of algae extract (strengthens/adds body), cholesterol (strengthens/conditions), saw palmetto fruit extract (thickens), and caffeine and birch extract (anti-irritants). To make it work best, make sure to pump the product 2 or 3 times a week into your hand and work it into you hair from roots to end, if you have longer hair pump again to smooth into your ends. If you feel that your hair is just way too thin for something like this to work, fear not. Do this serum twice a day and it will give you that added boost you’re looking for!