What Does SPF 100 Mean? Actually, not at all what you think.
There are some major problems with the SPF rating system that is printed on labels for sunscreens in the US: 1. The Sun Protection Factor (SPF) is a rating based on the amount of time it takes for ...
Vitamin C v. Copper Peptides, A Scientific Deep Dive
Dr. Jennifer Baron discusses the lack of data supporting copper peptides for collagen production in skincare, contrasts it with the proven benefits of topical Vitamin C, and emphasizes the need for...