Choose how much they curl

Eyelash extensions can come with different curls, which are defined as follows

J curl   These have the least amount of curve of all eyelash extensions. This is like the average curl of natural lashes. Click here for more.
B curl   This is slightly curlier than the J curl. It’s the effect you might achieve by using curlers on natural eyelashes. Click here for more.
C curl More curl. Possibly the most popular choice. They can give a more wide-eyed look. Click here for more.
CC curl   Slightly more dramatic, but still looking natural. Click here for more.
D curl (or O curl) Going beyond a natural look for a very dramatic look. They will only work on natural lashes which are already curly. Click here for more.
L curl These have a definite upswing and are good for adding to natural lashes which are straight, or on heavier eyelids. Click here for more.
L+ or U curl These have a very pronounced upswing and are most useful for eyes which are extremely deep-set. Click here for more.

Sometimes it can look more natural to have a mixture of curls. But if you have a section of one type of curl next to a section of another type, you should ensure they are the types closest to each other. So you might choose ‘J’ and ‘B’ next to each other, or ‘CC’ and ‘D’. You would not choose ‘J’ and ‘D’. That would look very strange.

Careful use of different curls can create useful effects. If you have a ‘lazy’ eye, where the eyelid is hanging low, then you may want to employ curls to give a more open eye effect. To do this, you want the area of greatest curl to be over the centre of the eyes – over the iris – with slightly less curled extensions on either side. Keeping to the rule that you should always move to the next-sized curl up or down, you could have ‘CC’ over the iris and ‘C’ curl on either side.

If you want to make your eyes appear more almond-shaped, you would want to use straighter lashes, such as ‘J’ or ‘B’, towards the outer edges of the eye.