Will leaving conditioner on your hair longer make it work better? (from The Beauty Brains)

Apparently not (scroll down). I have to admit this sort of blew my mind. My whole shower routine is built around leaving the conditioner on my hair for the maximum amount of time. But when you think about it, it's pretty obvious. Conditioner doesn't actually absorb into your hair; it just coats it. (Unless it's coconut oil, in which case it needs to stay on for longer than your typical shower.) So the most important thing is that you spread the conditioner evenly throughout your hair (or at least the part you want to condition), not that you let it sit.

Sometimes you just absorb that folk wisdom/marketing shit and don't question it. Oops.

Sleeping on your face won't really cause wrinkles (from The Beauty Brains)

Phew.

3 Lies the Natural Product Industry is Feeding You (and the Underlying Truth) (from FutureDerm)

There's important info here. For example:

If a database says an ingredient is toxic, it is. 

TRUTH: Not all studies claiming an ingredient is “toxic” are relevant to skin care, hair care, or cosmetics. 

Does lipstick expose you to dangerous levels of lead? (From The Beauty Brains)

Short answer: No. You'd have to eat a shitload of lipstick every fucking day to get any kind of toxicity. You already always have some lead in your system, anyway, fyi. More here.