Some conditioners formulated for thinning hair may also contain ingredients like biotin, keratin, and others that help to strengthen and plump hair to make it appear thicker. If you dye your hair ...

The shampoo and conditioner set uses ingredients such as biotin and keratin to encourage fullness — it's nearly 35% off.

Biotin is a popular ingredient for hair growth, but it may not be the most effective. We spoke with experts about whether ...

While genetics play a crucial role in the condition of hair, environmental factors can also affect shine and thickness.