The Real Difference Between Cheap and Pricey Beauty Products

WHEN SHE TRAVELS, Amanda Goddard, a content editor in New York, checks two bags: one for clothes, the other for skin-care products. “And that’s just for what I put on my face,” the 28-year-old said. Her load includes a Hepta-Peptide Serum, Lactic Acid Serum, Rosehip Oil and Retinol Serum, all from …