Why you shouldn't make your own sunscreen (from Lab Muffin)

I ranted about this once before, but here is a really thorough explanation of why trying to DIY sunscreen is a terrible idea.

No, It's Not a Good Idea to Make Your Own Mascara (from The Beauty Brains)

It's not better for you! Just buy some at the drugstore for $3. And learn what a "chemical" is, while you're at it. (Hint: water is a chemical.)