ELI5 Collagen - what makes it special and important for your skin?

How does collagen differ from other proteins? What are the different types of collagen? Is there a way to slow down collagen loss as we age? What is the relationship between collagen and gelatin?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: leosar, kkl81, leg3ndwaitforitdary, thehealadin, yet_md, diffyqgirl, catortle- and jorhiru

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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