I was scrolling and stopped at this atopic dermatitis routine piece. The line that stuck? "Finding the best routine often takes some trial and error." Let’s crunch that. Each trial is a new cleanser or moisturizer, probably $15 to $30 a pop. If you need 3 to 5 trials to find what works, that’s $45 to $150 sunk before you even have a consistent routine. No one mentions the cost of that trial period. I analyze every takeout order’s cost-benefit, so this oversight jumps right out. Trial and error sounds simple until you do the math.