As a beauty writer for more than a decade, I completely understand how and why skin changes with age. But, just in case you need a reminder: "As we get older, our skin becomes thinner, less elastic, ...

And while there are serums out there with *many* different vitamin C derivatives, I find that L-ascorbic acid serums give me ...

Vitamin B12 is an essential nutrient found in a wide variety of foods. Learn more about the best food sources of vitamin B12 ...