This ProScope Microscope Lens – 50X is the best all around lens for most samples. It allows you to touch and view most specimens on contact. The tip can be used for non-contact viewing as well. Standard for performing hair density tests. The polarization allows you to see subdermal features of the scalp and skin such as pigmentation, capillaries, deeper into pores and follicles, erythema. Useful in trichology, hair care, and education fields.