Combining Topical Oils with Collagen or Fish Oil: What Actually Improves Skin, Hair, and Nail Health?

https://www.bookmark-jungle.win/case-study-leaving-castor-oil-in-hair-for-48-hours-what-we-tested-and-what-changed

People often assume one solution fits all: slap on a facial oil or swallow a jar of supplements and wait for miracles. That approach misses nuance