Hair texture is determined by the circumference of the individual hair strand. There are three main textures - it is common to find a mixture of different textures on any one head.
The strands of fine hair are thin and very fragile. Fine hair feels light and can be oilier than other textures. It falls flat to the head and can become easily weighed down. Fine hair has difficulty holding styles, curls are prone to dropping and hair requires extra volume and root lift.
Medium is the most common hair texture. Individual strands are middle range and look and feel thicker than fine hair. This texture is easily styled and curls hold well. Medium hair tends to need more moisture due to being bigger in diameter.
Thick hair has the largest circumference of all the hair textures and is prone to being porous and losing moisture easily. Thick hair is denser and looks full. It is stronger than other textures and holds styles well. Due to the density it can take a longer to dry.
Whatever your hair type, find a product to suit it.