Perfume

Batch codes, consistent packaging, and a price that isn't suspiciously low are good signs, but buying from a source that guarantees authenticity outright removes the guesswork.

Dry skin doesn't hold fragrance well. Applying to slightly moisturized pulse points — wrists, neck — makes a noticeable difference in how long it lasts.

Not "better," just longer-lasting and usually stronger. EDT can be the more comfortable choice depending on climate and occasion.

Yes — heat and humidity break down the fragrance oils faster than light exposure does. A drawer or cabinet away from the bathroom mirror keeps a bottle good for years longer.