My wife regularly uses is in her a very effective hair removal, and completely painless hair removal that enables long-term near-final (after 3 uses, the results are already conclusive). However, even if it is specified that special glasses are not required, it preferred to buy anyway because it is a technique used in beauty salons and beauticians bear, they. Be sure to read the user guide (which is clear) before optimal use safely and indeed this seems reserved for light skin. This product is quite recommendable.