The shampoo and conditioner set uses ingredients such as biotin and keratin to help thicken locks — it's nearly 40% off.

What if you could reduce the problem for less than $30? Amazon's top-selling Bellisso Biotin Shampoo and Conditioner Set is a popular choice, and right now is a great time to try it out ...

Pretty legit, right? Even better, both the shampoo and conditioner are safe to use on color-treated and keratin-treated hair, contain no harsh chemicals, sulfates or parabens, and have not been ...

Our editors hunted down everything from a life-changing shampoo and conditioner to the most transformative curling wand, hair dryer and flat iron. Looking for a keratin treatment to get the ...