hey i read ur comment about sassafras not being safe, and i tried to look into it just for future refference but all i found is that it is poisionous if swallowed. so can you please send me some info on it? maybe u'll have more luck that i did.

thanx

It's hard to get accurate information on the net - there are so many sites giving out recipes like this with no mention of the risks. So I can understand your difficulty.
So a bit of background on sassifras oil. Firstly it is heavily regulated by the FDA (in the US) and the TGA (here in Australia) so it is not an oil you wil readily find - so to some degree my caution may be academic. But it doesn't hurt to know the details.
Sassafras oil contains large amounts (80-90%) of safrole, a phenol compound along with smaller amounts of a lot of other substances including other phenols and keytones. Safrole is a precurser to the production of certain illegal drugs and this together with it's reported toxicity is the reason why it is so heavily regulated.
Now taken internally even a minute few drops of sassifras can be lethal. But  remember that essential oils can also be absorbed through the skin. So the oil can still get into your body even if you do not swallow it directly.
Now the amount you absorb will be less than if you took the oil internally. But the amount your recipe requires is quite a lot. A teaspoon, which is around 5 mls, is equivalent to around 100 drops. So even absorbing a little could be problematic. Also we are talking about a mix that is being put on children's heads and could conceivably get into their eyes or mouth. It would not take much of this mix to potentially cause harm. Also Sassafras oil is a skin irritant.
Some commercial products contain sassafras oil but in very very small amounts, sometimes at less than one tenth of 1%. Others use other oils or herbs.
I don't want to scare people away from using essential oils at all. But please for anyone wanting to use essential oils, please do some research before embarking on any new recipes. If you are very interested in the subject then get hold of some good books or enrol in an aromatherapy course. There are some great aromatherapy sites out there but do check the qualifications of the person giving the advice before proceeding.

You are very welcome goodie :)