It’s bittersweet when your faves retain their normal price tags during the bounty of Black Friday and Cyber Monday sales. Such is the case for Dermalogica’s Oprah-approved “superstar” Daily Microfoliant this year — or so you would think. After a bit of nosing around, we’ve discovered a sneaky way to save on the beloved face exfoliant.  If you aren’t familiar with the lore of the Microfoliant, it’s a favorite of beauty editors and happy reviewers for its work on wrinkles, visible pores, hyperpigmentation, and redness. Rice starch gently exfoliates dead skin cells alongside chemical exfoliants papain and salicylic acid, while colloidal oatmeal, allantoin, and ginkgo biloba extract provide soothing comfort…