Beware of counter girls. If it were up to them, you’d be in the bathroom for two and a half hours each morning — putting 80 layers on your face. Keep your regimen simple. And when you do add a new product, do it gradually so your skin has time to adjust. Each skincare or makeup product has an average of 20 to 40 ingredients — you’re introducing 20 to 40 potential allergens to your face every time you try something new.
