A buyer can feel the texture of purchases of cosmetics/health products, also use a magnifier on the container/glass or plastic etc. Blurry glass that is more thick and heavy than is necessary is a sign of cheap manufacturing (which is NOT famous designer style at all!) If plastic is used, is it well crafted, embellished with carving or silver or gold? An expensive designer can use plastic to dispense product, but it will be stylish or seductive to the touch with smoothness, polish or texture. Fakes take shortcuts on the packaging (ie large bulky seams in glass or plastic, rough edges that aren't streamlined (think dollar store style) The printing of the ''designer they are coping''will even be blurry, the whole article will not completely feel expensive, check the neck and cap connections etc.
