I'm just nervous to get things wrong if I genuinely don't know, then the overthinking begins

anxiety doesn't always make sense

thank you for saying so

sometimes I feel like I should know things from common sense but also when there's multiple options, even more confusing!
Anything that contains mostly coconut oil without perfumes and other potentially harmful ingredients is fine. When it comes to lotions, go with hypo-allergic or as low ingredients a product as you can.
As somebody on the autistic spectrum I live in a world where I constantly make assessments with that big analytical computer at the back of my head that constantly observes everything. I aim to get roughly and increasingly more closely to the right ball park; but mistakes are an integral part of the learning process in order to find the target area.
Whereas for you there is only right or wrong but nothing in between. I live in a world with a decimal number system where I can make approximations but for me at least, anxiety sufferers seem to live with a binary system where there is only 1 and 0 and that never changes the deeper they look into a matter - and that is where it can become somewhat self-destructive. It's either right or wrong when you have anxiety but the abyss between the two never gets smaller, no matter how deep you look. There is no middleground and there are no thousands shades of grey to work with. Any executive decision is step over the edge of that abyss and not just something you run with, even if it turns out be not the best choice.
Multiple choices are the same problem, just worse, for anxiety sufferers - there are even more zeros than ones to be had. Whereas I go 'possible - defo not - perhaps? - sounds about right'. I can run with about two or three possible options and take it from there because for me the very real pain of getting it wrong is a spur for understanding things on a deeper level and for knowing
why something is right and something else isn't.
For people with anxiety any pain is not something to be contemplated or forgiveable; especially not for others - and any pain is always caused by you and nothing else. Any jump into the unknown or any choice without a preview of the outcome is a nightmare because right or wrong cannot be applied.
But what is important is that these are different systems of thinking but they are coherent in themselves. We should never judge, just accept, be tolerant and try to make things work for everybody, as much as possible. My way of thinking is also not exactly the standard one, either. Evolution is much more diverse than we can imagine and it is not always the main field that has carried on the flag when conditions have suddenly changed and nature had to adapt with whatever has survived.
The problem is that we live in a constantly evolving world and that we can only ever do our best for that particular time.