As far as I know from things I have read it is fine.
I can highly, highly, highly recommend the new Johnsons Holiday Skin Body Lotion! It is the most fab product I have discovered for years. I have only been using it for about 10 days and already have all my colleagues, friends and family addicted to it. Basically it is a body lotion with a small amount of fake tan in it. You use it everyday, just like you do with your usual body lotion, and it gradually builds up a lovely, real looking tan.
There are no streaks whatsoever, it doesn't smell and is so cheap - normal price £4.99 (but got soem in Wilkinsons at weekend for £2.45!)
I don't know what you mean about it being full of nasty chemicals. A self-tanner is basically ordinary body lotion with the active ingredient, dihydroxyacetone. DHA reacts with your dead skin cells and causes them to change colour.
DHA would only be of concern in pregnancy if you absorbed it in meaningful amounts into your bloodstream, and then if it were harmful to the foetus. It's been around since 1960.
Very knowledgeable, Ameriscot DHA is quite nasty and can cause horrible allergies - but I've no idea how much would be absorbed into one's bloodstream. Do you? Certainly some externally-applied substances (vitamin A acne creams etc) are strongly contraindicated in pregnancy, hence my question.
I haven't really heard of it as being nasty before. It's really quite a simple sugar. Because it reacts quickly with the outer layer of skin, the amount that can be absorbed is reduced. You'd have to ask a biologist about what happens to any that is absorbed.
The problem with any chemical is that they haven't been tested on pregnant women for ethical reasons, so they never actually get an approval or a cast iron guaranteed that it is 100% safe.
As for allergies - there is always someone who is going to be allergic to any given substance, but the record for DHA and contact dermatitis is very good. As with anything, a susceptible person should do a small test area first.