Is it dangerous to wax or use a chemical depliatory such as Nair on areas of the skin that have moles? I've seen warnings on some labels regarding this. What could happen to the moles?

I was thinking of buying a face powder that says it has an spf of 30. It seems convenient to have a powder sunblock since lotions make my oily face greasy. However, I was wondering if this powder will even be effective as a sunblock since I heard that some moisturizers and other products that advertise an added SPF sometimes don't have a high enough concentration of sunblocking ingredients to make it effective. I would like to know what do you think before I make my purchase.

I fell on my roller blades yesterday and skinned my knee. Now I'm watching my knee change and I am fascinated by the healing process. Could you explain to me just what is happening?

I plan to do some nude sunbathing this summer. What extra precautions should I take with the areas that have never seen the light of day? Should I use a higher SPF on my "naughty parts" than on, say, my arms and legs?

I am 21 and have had consistent acne. I have tried topical creams (benzoyl peroxide, Retin-A, and topical antibiotics; as well as oral antibiotics for a number of months before). But, the acne keeps coming back.

For acne, does taking omega-3 fish oil supplements help? If so, how does it help, for what length of time should it be taken, and how many milligrams should one take?

Here's a question I have been debating with a friend for a while, and seeing as how I'm not scheduled to go to the dentist again for a while, I thought you could shed some light on the issue: when brushing one's teeth, should one also brush one's tongue? I would think yes, because what's the point of brushing germs off teeth if the tongue still has them there, and will transfer them to the teeth as soon as you're done brushing. My friend thinks it makes absolutely no difference. So does it matter? We have an ice cream wagered on this one! I hope I'm right!