How to choose
How to tell whether a $140 moisturiser is worth it to you
Price per jar hides the number that matters. At 0.5 mL twice a day a 50 mL jar lasts 50 days, so a $140 jar costs $1.40 a use and $1,022 a year.
Photo: Pittigrilli · CC BY-SA 4.0 · Wikimedia Commons