does not thicken [SEP] it does lengthen extremely but it does not thicken i was looking for a dupe that costs much less than stilas huge mascara but i think i am better off with stilas huge mascara since it really does lengthen define and thicken your lashes this was an okay mascara i got this since the other drug store brands have paraben in it in the picture one eye has mascara and the other does not to show the comparison of with and without this mascara