Scrolling through social media, it’s hard to miss influencers raiding the pantry for “natural” beauty fixes: baking-soda scrubs, garlic spot sticks, cayenne masks that promise to tighten pores and banish dullness.The appeal is obvious. Why pay for a dermatologist-tested cream when everyday ingredients come with antimicrobial or exfoliating properties? Yet what looks sensible in a 30-second reel can translate...