Can anyone recommend a moisturiser with an SPF of approx 30?

I'm on a low dose of Isotretinoin (Roaccutane) so it needs to be quite lightweight, oil-free and preferably made with natural ingredients rather than chemical.

I use this (as recommended by my skin cancer support nurse). It has a higher SPF than you have asked for though, but it might be suitable for you. Hope this helps.

Thanks, looks good.

I'm coming to the conclusion that there might not be any 'natural' sunscreens out there anyway.