Putting moisturiser on top of SPF 50 serum - ok or not?

[PunishmentRoundupWithJoon]

Bought an SPF50 serum and it states it's suitable for use under make up. I don't wear make up, so am wondering if it's ok to put my regular moisturiser on top of it? I can't see that would negate the effectiveness if make up wouldn't.

It's Ambre Solaire Invisible Super Serum (it's not that super, still feels like sun lotion!).

Just looked at it and, whilst it is called a serum, it really is just a facial sunscreen, isn't it? I'd probably apply it as my last layer (if not wearing make up) - so over your moisturiser, like a would any other sunscreen.

Sunscreen should be the last step - you can use your moisturizer before applying the spf

Yes, that's what I thought. It's with it saying 'suitable for use under make up' that made me wonder. Not even that keen on it really, it's a bit sticky. But don't want to waste it now I've bought it.

Thanks :-)